-99=7+2(6r-5)

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Solution for -99=7+2(6r-5) equation:


Simplifying
-99 = 7 + 2(6r + -5)

Reorder the terms:
-99 = 7 + 2(-5 + 6r)
-99 = 7 + (-5 * 2 + 6r * 2)
-99 = 7 + (-10 + 12r)

Combine like terms: 7 + -10 = -3
-99 = -3 + 12r

Solving
-99 = -3 + 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.
-99 + -12r = -3 + 12r + -12r

Combine like terms: 12r + -12r = 0
-99 + -12r = -3 + 0
-99 + -12r = -3

Add '99' to each side of the equation.
-99 + 99 + -12r = -3 + 99

Combine like terms: -99 + 99 = 0
0 + -12r = -3 + 99
-12r = -3 + 99

Combine like terms: -3 + 99 = 96
-12r = 96

Divide each side by '-12'.
r = -8

Simplifying
r = -8

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