-79=r-91

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Solution for -79=r-91 equation:


Simplifying
-79 = r + -91

Reorder the terms:
-79 = -91 + r

Solving
-79 = -91 + 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.
-79 + -1r = -91 + r + -1r

Combine like terms: r + -1r = 0
-79 + -1r = -91 + 0
-79 + -1r = -91

Add '79' to each side of the equation.
-79 + 79 + -1r = -91 + 79

Combine like terms: -79 + 79 = 0
0 + -1r = -91 + 79
-1r = -91 + 79

Combine like terms: -91 + 79 = -12
-1r = -12

Divide each side by '-1'.
r = 12

Simplifying
r = 12

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