9-7r-8-8=r-7

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Solution for 9-7r-8-8=r-7 equation:


Simplifying
9 + -7r + -8 + -8 = r + -7

Reorder the terms:
9 + -8 + -8 + -7r = r + -7

Combine like terms: 9 + -8 = 1
1 + -8 + -7r = r + -7

Combine like terms: 1 + -8 = -7
-7 + -7r = r + -7

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

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

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

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

Solving
-7r = r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
-7r + -1r = r + -1r

Combine like terms: -7r + -1r = -8r
-8r = r + -1r

Combine like terms: r + -1r = 0
-8r = 0

Divide each side by '-8'.
r = 0

Simplifying
r = 0

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