5(4r-4)=80

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Solution for 5(4r-4)=80 equation:


Simplifying
5(4r + -4) = 80

Reorder the terms:
5(-4 + 4r) = 80
(-4 * 5 + 4r * 5) = 80
(-20 + 20r) = 80

Solving
-20 + 20r = 80

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 + 20r = 80 + 20

Combine like terms: -20 + 20 = 0
0 + 20r = 80 + 20
20r = 80 + 20

Combine like terms: 80 + 20 = 100
20r = 100

Divide each side by '20'.
r = 5

Simplifying
r = 5

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