7r-8r=7+8r-7-5r

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Solution for 7r-8r=7+8r-7-5r equation:


Simplifying
7r + -8r = 7 + 8r + -7 + -5r

Combine like terms: 7r + -8r = -1r
-1r = 7 + 8r + -7 + -5r

Reorder the terms:
-1r = 7 + -7 + 8r + -5r

Combine like terms: 7 + -7 = 0
-1r = 0 + 8r + -5r
-1r = 8r + -5r

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

Solving
-1r = 3r

Solving for variable 'r'.

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

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

Combine like terms: -1r + -3r = -4r
-4r = 3r + -3r

Combine like terms: 3r + -3r = 0
-4r = 0

Divide each side by '-4'.
r = 0

Simplifying
r = 0

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