13+4r=-91

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Solution for 13+4r=-91 equation: 


Simplifying
13 + 4r = -91

Solving
13 + 4r = -91

Solving for variable 'r'.

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

Add '-13' to each side of the equation.
13 + -13 + 4r = -91 + -13

Combine like terms: 13 + -13 = 0
0 + 4r = -91 + -13
4r = -91 + -13

Combine like terms: -91 + -13 = -104
4r = -104

Divide each side by '4'.
r = -26

Simplifying
r = -26

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