108=4(7+7r)-4

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Solution for 108=4(7+7r)-4 equation:


Simplifying
108 = 4(7 + 7r) + -4
108 = (7 * 4 + 7r * 4) + -4
108 = (28 + 28r) + -4

Reorder the terms:
108 = 28 + -4 + 28r

Combine like terms: 28 + -4 = 24
108 = 24 + 28r

Solving
108 = 24 + 28r

Solving for variable 'r'.

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

Add '-28r' to each side of the equation.
108 + -28r = 24 + 28r + -28r

Combine like terms: 28r + -28r = 0
108 + -28r = 24 + 0
108 + -28r = 24

Add '-108' to each side of the equation.
108 + -108 + -28r = 24 + -108

Combine like terms: 108 + -108 = 0
0 + -28r = 24 + -108
-28r = 24 + -108

Combine like terms: 24 + -108 = -84
-28r = -84

Divide each side by '-28'.
r = 3

Simplifying
r = 3

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