7=-7r+8r

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


Simplifying
7 = -7r + 8r

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

Solving
7 = 1r

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.
7 + -1r = 1r + -1r

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

Add '-7' to each side of the equation.
7 + -7 + -1r = 0 + -7

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

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

Divide each side by '-1'.
r = 7

Simplifying
r = 7

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