-5(r-30)=10

Solution for -5(r-30)=10 equation:

Simplifying
-5(r + -30) = 10

Reorder the terms:
-5(-30 + r) = 10
(-30 * -5 + r * -5) = 10
(150 + -5r) = 10

Solving
150 + -5r = 10

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-150' to each side of the equation.
150 + -150 + -5r = 10 + -150

Combine like terms: 150 + -150 = 0
0 + -5r = 10 + -150
-5r = 10 + -150

Combine like terms: 10 + -150 = -140
-5r = -140

Divide each side by '-5'.
r = 28

Simplifying
r = 28