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Use the relationship you determined to write an equation to help you solve for
X.

(6x-18)+(6x)=90
Cómbine Like Terms

6x-18+6x=90
Enter the result.

Use the relationship you determined to write an equation to help you solve for $X$ . $\newline$ $(6 x-18)+(6 x)=90$ $\newline$ Cómbine Like Terms $\newline$ $6 x-18+6 x=90$ $\newline$ Enter the result.

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Find values of derivatives using limits

Full solution

Q. Use the relationship you determined to write an equation to help you solve for

X

.

\newline

(6 x-18)+(6 x)=90

\newline

Cómbine Like Terms

\newline

6 x-18+6 x=90

\newline

Enter the result.

Combine like terms: Combine like terms by adding the coefficients of $x$ together. $6x + 6x = 12x$ So, the equation now is $12x - 18 = 90$ .
Add $18$ to isolate: Add $18$ to both sides to isolate the term with $x$ . $12x - 18 + 18 = 90 + 18$ $12x = 108$ .
Divide both sides: Divide both sides by $12$ to solve for $x$ . $\newline$ $\frac{12x}{12} = \frac{108}{12}$ $\newline$ $x = 9$ .

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