-3r+7r=-16+8r

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Solution for -3r+7r=-16+8r equation: 


Simplifying
-3r + 7r = -16 + 8r

Combine like terms: -3r + 7r = 4r
4r = -16 + 8r

Solving
4r = -16 + 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.
4r + -8r = -16 + 8r + -8r

Combine like terms: 4r + -8r = -4r
-4r = -16 + 8r + -8r

Combine like terms: 8r + -8r = 0
-4r = -16 + 0
-4r = -16

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

Simplifying
r = 4

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