-5(4-r)=15

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Solution for -5(4-r)=15 equation:


Simplifying
-5(4 + -1r) = 15
(4 * -5 + -1r * -5) = 15
(-20 + 5r) = 15

Solving
-20 + 5r = 15

Solving for variable 'r'.

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

Add '20' to each side of the equation.
-20 + 20 + 5r = 15 + 20

Combine like terms: -20 + 20 = 0
0 + 5r = 15 + 20
5r = 15 + 20

Combine like terms: 15 + 20 = 35
5r = 35

Divide each side by '5'.
r = 7

Simplifying
r = 7

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