Solve for x : sqrt(5x+91)+12=21 Answer:

Isolate square root: Isolate the square root on one side of the equation. Subtract 12 from both sides of the equation to isolate the square root. sqrt(5x + 91) + 12 - 12 = 21 - 12 sqrt(5x + 91) = 9Square both sides: Square both sides of the equation to eliminate the square root. (sqrt(5x + 91))^2 = 9^2 5x + 91 = 81Isolate variable: Isolate the variable on one side of the equation to solve for x. Subtract 91 from both sides of the equation. 5x + 91 - 91 = 81 - 91 5x = -10Divide by 5: Divide both sides by 5 to solve for x. 5x / 5 = -10 / 5 x = -2

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Solve for
x :

sqrt(5x+91)+12=21
Answer:

Solve for $\mathrm{x}$ : $\newline$ $\sqrt{5 x+91}+12=21$ $\newline$ Answer:

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Q. Solve for

\mathrm{x}

\newline

\sqrt{5 x+91}+12=21

\newline

Answer:

Isolate square root: Isolate the square root on one side of the equation. $\newline$ Subtract $12$ from both sides of the equation to isolate the square root. $\newline$ $\sqrt{5x + 91} + 12 - 12 = 21 - 12$ $\newline$ $\sqrt{5x + 91} = 9$
Square both sides: Square both sides of the equation to eliminate the square root. $\newline$ $(\sqrt{5x + 91})^2 = 9^2$ $\newline$ $5x + 91 = 81$
Isolate variable: Isolate the variable on one side of the equation to solve for $x$ . $\newline$ Subtract $91$ from both sides of the equation. $\newline$ $5x + 91 - 91 = 81 - 91$ $\newline$ $5x = -10$
Divide by $5$ : Divide both sides by $5$ to solve for $x$ . $\frac{5x}{5} = \frac{-10}{5}$ $x = -2$