-5r+15=-7r+7

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Solution for -5r+15=-7r+7 equation:


Simplifying
-5r + 15 = -7r + 7

Reorder the terms:
15 + -5r = -7r + 7

Reorder the terms:
15 + -5r = 7 + -7r

Solving
15 + -5r = 7 + -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.
15 + -5r + 7r = 7 + -7r + 7r

Combine like terms: -5r + 7r = 2r
15 + 2r = 7 + -7r + 7r

Combine like terms: -7r + 7r = 0
15 + 2r = 7 + 0
15 + 2r = 7

Add '-15' to each side of the equation.
15 + -15 + 2r = 7 + -15

Combine like terms: 15 + -15 = 0
0 + 2r = 7 + -15
2r = 7 + -15

Combine like terms: 7 + -15 = -8
2r = -8

Divide each side by '2'.
r = -4

Simplifying
r = -4

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