-125=-5(1+6r)

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Solution for -125=-5(1+6r) equation:


Simplifying
-125 = -5(1 + 6r)
-125 = (1 * -5 + 6r * -5)
-125 = (-5 + -30r)

Solving
-125 = -5 + -30r

Solving for variable 'r'.

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

Add '30r' to each side of the equation.
-125 + 30r = -5 + -30r + 30r

Combine like terms: -30r + 30r = 0
-125 + 30r = -5 + 0
-125 + 30r = -5

Add '125' to each side of the equation.
-125 + 125 + 30r = -5 + 125

Combine like terms: -125 + 125 = 0
0 + 30r = -5 + 125
30r = -5 + 125

Combine like terms: -5 + 125 = 120
30r = 120

Divide each side by '30'.
r = 4

Simplifying
r = 4

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