-4(r-5)=8

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Solution for -4(r-5)=8 equation: 


Simplifying
-4(r + -5) = 8

Reorder the terms:
-4(-5 + r) = 8
(-5 * -4 + r * -4) = 8
(20 + -4r) = 8

Solving
20 + -4r = 8

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 + -4r = 8 + -20

Combine like terms: 20 + -20 = 0
0 + -4r = 8 + -20
-4r = 8 + -20

Combine like terms: 8 + -20 = -12
-4r = -12

Divide each side by '-4'.
r = 3

Simplifying
r = 3

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