15r=8r-56

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Solution for 15r=8r-56 equation: 


Simplifying
15r = 8r + -56

Reorder the terms:
15r = -56 + 8r

Solving
15r = -56 + 8r

Solving for variable 'r'.

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

Add '-8r' to each side of the equation.
15r + -8r = -56 + 8r + -8r

Combine like terms: 15r + -8r = 7r
7r = -56 + 8r + -8r

Combine like terms: 8r + -8r = 0
7r = -56 + 0
7r = -56

Divide each side by '7'.
r = -8

Simplifying
r = -8

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