13r+5=r-7

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Solution for 13r+5=r-7 equation:


Simplifying
13r + 5 = r + -7

Reorder the terms:
5 + 13r = r + -7

Reorder the terms:
5 + 13r = -7 + r

Solving
5 + 13r = -7 + 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.
5 + 13r + -1r = -7 + r + -1r

Combine like terms: 13r + -1r = 12r
5 + 12r = -7 + r + -1r

Combine like terms: r + -1r = 0
5 + 12r = -7 + 0
5 + 12r = -7

Add '-5' to each side of the equation.
5 + -5 + 12r = -7 + -5

Combine like terms: 5 + -5 = 0
0 + 12r = -7 + -5
12r = -7 + -5

Combine like terms: -7 + -5 = -12
12r = -12

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

Simplifying
r = -1

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