7r-3=8r-8

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


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

Reorder the terms:
-3 + 7r = 8r + -8

Reorder the terms:
-3 + 7r = -8 + 8r

Solving
-3 + 7r = -8 + 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.
-3 + 7r + -8r = -8 + 8r + -8r

Combine like terms: 7r + -8r = -1r
-3 + -1r = -8 + 8r + -8r

Combine like terms: 8r + -8r = 0
-3 + -1r = -8 + 0
-3 + -1r = -8

Add '3' to each side of the equation.
-3 + 3 + -1r = -8 + 3

Combine like terms: -3 + 3 = 0
0 + -1r = -8 + 3
-1r = -8 + 3

Combine like terms: -8 + 3 = -5
-1r = -5

Divide each side by '-1'.
r = 5

Simplifying
r = 5

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