-2(9r+3)-7r=-10-(12r+9)

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Solution for -2(9r+3)-7r=-10-(12r+9) equation:


Simplifying
-2(9r + 3) + -7r = -10 + -1(12r + 9)

Reorder the terms:
-2(3 + 9r) + -7r = -10 + -1(12r + 9)
(3 * -2 + 9r * -2) + -7r = -10 + -1(12r + 9)
(-6 + -18r) + -7r = -10 + -1(12r + 9)

Combine like terms: -18r + -7r = -25r
-6 + -25r = -10 + -1(12r + 9)

Reorder the terms:
-6 + -25r = -10 + -1(9 + 12r)
-6 + -25r = -10 + (9 * -1 + 12r * -1)
-6 + -25r = -10 + (-9 + -12r)

Combine like terms: -10 + -9 = -19
-6 + -25r = -19 + -12r

Solving
-6 + -25r = -19 + -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.
-6 + -25r + 12r = -19 + -12r + 12r

Combine like terms: -25r + 12r = -13r
-6 + -13r = -19 + -12r + 12r

Combine like terms: -12r + 12r = 0
-6 + -13r = -19 + 0
-6 + -13r = -19

Add '6' to each side of the equation.
-6 + 6 + -13r = -19 + 6

Combine like terms: -6 + 6 = 0
0 + -13r = -19 + 6
-13r = -19 + 6

Combine like terms: -19 + 6 = -13
-13r = -13

Divide each side by '-13'.
r = 1

Simplifying
r = 1

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