-5(4r-4)=100

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Solution for -5(4r-4)=100 equation:


Simplifying
-5(4r + -4) = 100

Reorder the terms:
-5(-4 + 4r) = 100
(-4 * -5 + 4r * -5) = 100
(20 + -20r) = 100

Solving
20 + -20r = 100

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 = 100 + -20

Combine like terms: 20 + -20 = 0
0 + -20r = 100 + -20
-20r = 100 + -20

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

Divide each side by '-20'.
r = -4

Simplifying
r = -4

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