79=7-9r

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Solution for 79=7-9r equation:


Simplifying
79 = 7 + -9r

Solving
79 = 7 + -9r

Solving for variable 'r'.

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

Add '9r' to each side of the equation.
79 + 9r = 7 + -9r + 9r

Combine like terms: -9r + 9r = 0
79 + 9r = 7 + 0
79 + 9r = 7

Add '-79' to each side of the equation.
79 + -79 + 9r = 7 + -79

Combine like terms: 79 + -79 = 0
0 + 9r = 7 + -79
9r = 7 + -79

Combine like terms: 7 + -79 = -72
9r = -72

Divide each side by '9'.
r = -8

Simplifying
r = -8

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