-8-15r=-56-3r

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Solution for -8-15r=-56-3r equation:


Simplifying
-8 + -15r = -56 + -3r

Solving
-8 + -15r = -56 + -3r

Solving for variable 'r'.

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

Add '3r' to each side of the equation.
-8 + -15r + 3r = -56 + -3r + 3r

Combine like terms: -15r + 3r = -12r
-8 + -12r = -56 + -3r + 3r

Combine like terms: -3r + 3r = 0
-8 + -12r = -56 + 0
-8 + -12r = -56

Add '8' to each side of the equation.
-8 + 8 + -12r = -56 + 8

Combine like terms: -8 + 8 = 0
0 + -12r = -56 + 8
-12r = -56 + 8

Combine like terms: -56 + 8 = -48
-12r = -48

Divide each side by '-12'.
r = 4

Simplifying
r = 4

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