137=7(7-r)-4r

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Solution for 137=7(7-r)-4r equation:


Simplifying
137 = 7(7 + -1r) + -4r
137 = (7 * 7 + -1r * 7) + -4r
137 = (49 + -7r) + -4r

Combine like terms: -7r + -4r = -11r
137 = 49 + -11r

Solving
137 = 49 + -11r

Solving for variable 'r'.

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

Add '11r' to each side of the equation.
137 + 11r = 49 + -11r + 11r

Combine like terms: -11r + 11r = 0
137 + 11r = 49 + 0
137 + 11r = 49

Add '-137' to each side of the equation.
137 + -137 + 11r = 49 + -137

Combine like terms: 137 + -137 = 0
0 + 11r = 49 + -137
11r = 49 + -137

Combine like terms: 49 + -137 = -88
11r = -88

Divide each side by '11'.
r = -8

Simplifying
r = -8

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