12(r+13)=2(r+5)-3r

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Solution for 12(r+13)=2(r+5)-3r equation:


Simplifying
12(r + 13) = 2(r + 5) + -3r

Reorder the terms:
12(13 + r) = 2(r + 5) + -3r
(13 * 12 + r * 12) = 2(r + 5) + -3r
(156 + 12r) = 2(r + 5) + -3r

Reorder the terms:
156 + 12r = 2(5 + r) + -3r
156 + 12r = (5 * 2 + r * 2) + -3r
156 + 12r = (10 + 2r) + -3r

Combine like terms: 2r + -3r = -1r
156 + 12r = 10 + -1r

Solving
156 + 12r = 10 + -1r

Solving for variable 'r'.

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

Add 'r' to each side of the equation.
156 + 12r + r = 10 + -1r + r

Combine like terms: 12r + r = 13r
156 + 13r = 10 + -1r + r

Combine like terms: -1r + r = 0
156 + 13r = 10 + 0
156 + 13r = 10

Add '-156' to each side of the equation.
156 + -156 + 13r = 10 + -156

Combine like terms: 156 + -156 = 0
0 + 13r = 10 + -156
13r = 10 + -156

Combine like terms: 10 + -156 = -146
13r = -146

Divide each side by '13'.
r = -11.23076923

Simplifying
r = -11.23076923

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