9r-4(r+4)=3(4r-6)-12

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Solution for 9r-4(r+4)=3(4r-6)-12 equation:


Simplifying
9r + -4(r + 4) = 3(4r + -6) + -12

Reorder the terms:
9r + -4(4 + r) = 3(4r + -6) + -12
9r + (4 * -4 + r * -4) = 3(4r + -6) + -12
9r + (-16 + -4r) = 3(4r + -6) + -12

Reorder the terms:
-16 + 9r + -4r = 3(4r + -6) + -12

Combine like terms: 9r + -4r = 5r
-16 + 5r = 3(4r + -6) + -12

Reorder the terms:
-16 + 5r = 3(-6 + 4r) + -12
-16 + 5r = (-6 * 3 + 4r * 3) + -12
-16 + 5r = (-18 + 12r) + -12

Reorder the terms:
-16 + 5r = -18 + -12 + 12r

Combine like terms: -18 + -12 = -30
-16 + 5r = -30 + 12r

Solving
-16 + 5r = -30 + 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.
-16 + 5r + -12r = -30 + 12r + -12r

Combine like terms: 5r + -12r = -7r
-16 + -7r = -30 + 12r + -12r

Combine like terms: 12r + -12r = 0
-16 + -7r = -30 + 0
-16 + -7r = -30

Add '16' to each side of the equation.
-16 + 16 + -7r = -30 + 16

Combine like terms: -16 + 16 = 0
0 + -7r = -30 + 16
-7r = -30 + 16

Combine like terms: -30 + 16 = -14
-7r = -14

Divide each side by '-7'.
r = 2

Simplifying
r = 2

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