107=-3(-3-3r)+5r

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Solution for 107=-3(-3-3r)+5r equation:


Simplifying
107 = -3(-3 + -3r) + 5r
107 = (-3 * -3 + -3r * -3) + 5r
107 = (9 + 9r) + 5r

Combine like terms: 9r + 5r = 14r
107 = 9 + 14r

Solving
107 = 9 + 14r

Solving for variable 'r'.

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

Add '-14r' to each side of the equation.
107 + -14r = 9 + 14r + -14r

Combine like terms: 14r + -14r = 0
107 + -14r = 9 + 0
107 + -14r = 9

Add '-107' to each side of the equation.
107 + -107 + -14r = 9 + -107

Combine like terms: 107 + -107 = 0
0 + -14r = 9 + -107
-14r = 9 + -107

Combine like terms: 9 + -107 = -98
-14r = -98

Divide each side by '-14'.
r = 7

Simplifying
r = 7

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