Question

Solving 3w - 7r = 15 for r

Answer 1

we have

3w - 7r = 15

solve for r

that means

isolate the variable r

step 1

subtract 3w both sides

3w-7r-3w=15-3w

simplify

-7r=15-3w

step 2

Divide both sides by -7

-7r/-7=(15-3w)/(-7)

simplify

r=(3w-15)/7