-5(-1-5r)=-5(2-4r)

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Solution for -5(-1-5r)=-5(2-4r) equation:


Simplifying
-5(-1 + -5r) = -5(2 + -4r)
(-1 * -5 + -5r * -5) = -5(2 + -4r)
(5 + 25r) = -5(2 + -4r)
5 + 25r = (2 * -5 + -4r * -5)
5 + 25r = (-10 + 20r)

Solving
5 + 25r = -10 + 20r

Solving for variable 'r'.

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

Add '-20r' to each side of the equation.
5 + 25r + -20r = -10 + 20r + -20r

Combine like terms: 25r + -20r = 5r
5 + 5r = -10 + 20r + -20r

Combine like terms: 20r + -20r = 0
5 + 5r = -10 + 0
5 + 5r = -10

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

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

Combine like terms: -10 + -5 = -15
5r = -15

Divide each side by '5'.
r = -3

Simplifying
r = -3

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