-28.5=8+7(r+7.5)

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Solution for -28.5=8+7(r+7.5) equation: 


Simplifying
-28.5 = 8 + 7(r + 7.5)

Reorder the terms:
-28.5 = 8 + 7(7.5 + r)
-28.5 = 8 + (7.5 * 7 + r * 7)
-28.5 = 8 + (52.5 + 7r)

Combine like terms: 8 + 52.5 = 60.5
-28.5 = 60.5 + 7r

Solving
-28.5 = 60.5 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
-28.5 + -7r = 60.5 + 7r + -7r

Combine like terms: 7r + -7r = 0
-28.5 + -7r = 60.5 + 0
-28.5 + -7r = 60.5

Add '28.5' to each side of the equation.
-28.5 + 28.5 + -7r = 60.5 + 28.5

Combine like terms: -28.5 + 28.5 = 0.0
0.0 + -7r = 60.5 + 28.5
-7r = 60.5 + 28.5

Combine like terms: 60.5 + 28.5 = 89
-7r = 89

Divide each side by '-7'.
r = -12.71428571

Simplifying
r = -12.71428571

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