2r-(5-r)=13+12r

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Solution for 2r-(5-r)=13+12r equation:


Simplifying
2r + -1(5 + -1r) = 13 + 12r
2r + (5 * -1 + -1r * -1) = 13 + 12r
2r + (-5 + 1r) = 13 + 12r

Reorder the terms:
-5 + 2r + 1r = 13 + 12r

Combine like terms: 2r + 1r = 3r
-5 + 3r = 13 + 12r

Solving
-5 + 3r = 13 + 12r

Solving for variable 'r'.

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

Add '-12r' to each side of the equation.
-5 + 3r + -12r = 13 + 12r + -12r

Combine like terms: 3r + -12r = -9r
-5 + -9r = 13 + 12r + -12r

Combine like terms: 12r + -12r = 0
-5 + -9r = 13 + 0
-5 + -9r = 13

Add '5' to each side of the equation.
-5 + 5 + -9r = 13 + 5

Combine like terms: -5 + 5 = 0
0 + -9r = 13 + 5
-9r = 13 + 5

Combine like terms: 13 + 5 = 18
-9r = 18

Divide each side by '-9'.
r = -2

Simplifying
r = -2

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