Question

Solve the equation: 5(r + 4) = -12 + 7r*

Answer 1

Answer:

$r=16$

Step-by-step explanation:

$5(r + 4) = -12 + 7r$

➠ Use the distributive property to multiply 5 by r +4:

$5r+20=-12+7r$

➠ Subtract 7r from both sides:

$5r+20-7r=-12$

➠ Combin 5r and -7r to get -2r:

$-2r+20=-12$

➠ Subtract 20 from both sides:

$-2r=-32$

➠ Divide both sides by -2:

$r=\frac{-32}{-2}$

$r=16$

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