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Let’s check out your problem:
Solve for y:
\newline
21
+
y
=
24
21+y=24
21
+
y
=
24
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Math Problems
Precalculus
Solve logarithmic equations with multiple logarithms
Full solution
Q.
Solve for y:
\newline
21
+
y
=
24
21+y=24
21
+
y
=
24
Isolate y by subtracting
21
21
21
:
Subtract
21
21
21
from both sides to isolate y.
\newline
21
+
y
−
21
=
24
−
21
21 + y - 21 = 24 - 21
21
+
y
−
21
=
24
−
21
\newline
y
=
3
y = 3
y
=
3
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