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Let’s check out your problem:
Solve for
x
\mathrm{x}
x
.
\newline
−
4
(
x
−
4
)
+
x
+
3
=
−
2
-4(x-4)+x+3=-2
−
4
(
x
−
4
)
+
x
+
3
=
−
2
\newline
Answer:
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Math Problems
Algebra 1
Solve linear equations: mixed review
Full solution
Q.
Solve for
x
\mathrm{x}
x
.
\newline
−
4
(
x
−
4
)
+
x
+
3
=
−
2
-4(x-4)+x+3=-2
−
4
(
x
−
4
)
+
x
+
3
=
−
2
\newline
Answer:
Distribute and Simplify:
First, distribute the
−
4
-4
−
4
into the parentheses.
\newline
−
4
(
x
−
4
)
+
x
+
3
=
−
2
-4(x-4)+x+3=-2
−
4
(
x
−
4
)
+
x
+
3
=
−
2
\newline
−
4
⋅
x
+
16
+
x
+
3
=
−
2
-4\cdot x + 16 + x + 3 = -2
−
4
⋅
x
+
16
+
x
+
3
=
−
2
Combine Like Terms:
Combine like terms on the left side of the equation.
\newline
−
4
x
+
x
+
16
+
3
=
−
2
-4x + x + 16 + 3 = -2
−
4
x
+
x
+
16
+
3
=
−
2
\newline
(
−
4
x
+
x
)
+
(
16
+
3
)
=
−
2
(-4x + x) + (16 + 3) = -2
(
−
4
x
+
x
)
+
(
16
+
3
)
=
−
2
\newline
−
3
x
+
19
=
−
2
-3x + 19 = -2
−
3
x
+
19
=
−
2
Isolate Variable:
Subtract
19
19
19
from both sides to isolate the term with the variable
x
x
x
.
\newline
−
3
x
+
19
−
19
=
−
2
−
19
-3x + 19 - 19 = -2 - 19
−
3
x
+
19
−
19
=
−
2
−
19
\newline
−
3
x
=
−
21
-3x = -21
−
3
x
=
−
21
Solve for x:
Divide both sides by
−
3
-3
−
3
to solve for x.
\newline
−
3
x
/
−
3
=
−
21
/
−
3
-3x / -3 = -21 / -3
−
3
x
/
−
3
=
−
21/
−
3
\newline
x
=
7
x = 7
x
=
7
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How many solutions does the following equation have?
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answer:
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(A) No solutions
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(B) Exactly one solution
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How many solutions does the following equation have?
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9
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9
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x
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9
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answer:
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4
x
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2
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−
6
(
x
+
7
)
=
−
4
x
−
2
\newline
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1
1
1
answer:
\newline
(A) No solutions
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(B) Exactly one solution
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(C) Infinitely many solutions
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How many solutions does the following equation have?
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4
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7
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7
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x
\newline
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answer:
\newline
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(B) Exactly one solution
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(C) Infinitely many solutions
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17
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\newline
Choose
1
1
1
answer:
\newline
(A) No solutions
\newline
(B) Exactly one solution
\newline
(C) Infinitely many solutions
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Question
How many solutions does the following equation have?
\newline
9
z
−
6
+
7
z
=
16
z
−
6
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9
z
−
6
+
7
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=
16
z
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\newline
Choose
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answer:
\newline
(A) No solutions
\newline
(B) Exactly one solution
\newline
(C) Infinitely many solutions
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