-15-4r=8r-7

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Solution for -15-4r=8r-7 equation:


Simplifying
-15 + -4r = 8r + -7

Reorder the terms:
-15 + -4r = -7 + 8r

Solving
-15 + -4r = -7 + 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.
-15 + -4r + -8r = -7 + 8r + -8r

Combine like terms: -4r + -8r = -12r
-15 + -12r = -7 + 8r + -8r

Combine like terms: 8r + -8r = 0
-15 + -12r = -7 + 0
-15 + -12r = -7

Add '15' to each side of the equation.
-15 + 15 + -12r = -7 + 15

Combine like terms: -15 + 15 = 0
0 + -12r = -7 + 15
-12r = -7 + 15

Combine like terms: -7 + 15 = 8
-12r = 8

Divide each side by '-12'.
r = -0.6666666667

Simplifying
r = -0.6666666667

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