r-12-4r=-6(6-8r)+6(1-9r)

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Solution for r-12-4r=-6(6-8r)+6(1-9r) equation:


Simplifying
r + -12 + -4r = -6(6 + -8r) + 6(1 + -9r)

Reorder the terms:
-12 + r + -4r = -6(6 + -8r) + 6(1 + -9r)

Combine like terms: r + -4r = -3r
-12 + -3r = -6(6 + -8r) + 6(1 + -9r)
-12 + -3r = (6 * -6 + -8r * -6) + 6(1 + -9r)
-12 + -3r = (-36 + 48r) + 6(1 + -9r)
-12 + -3r = -36 + 48r + (1 * 6 + -9r * 6)
-12 + -3r = -36 + 48r + (6 + -54r)

Reorder the terms:
-12 + -3r = -36 + 6 + 48r + -54r

Combine like terms: -36 + 6 = -30
-12 + -3r = -30 + 48r + -54r

Combine like terms: 48r + -54r = -6r
-12 + -3r = -30 + -6r

Solving
-12 + -3r = -30 + -6r

Solving for variable 'r'.

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

Add '6r' to each side of the equation.
-12 + -3r + 6r = -30 + -6r + 6r

Combine like terms: -3r + 6r = 3r
-12 + 3r = -30 + -6r + 6r

Combine like terms: -6r + 6r = 0
-12 + 3r = -30 + 0
-12 + 3r = -30

Add '12' to each side of the equation.
-12 + 12 + 3r = -30 + 12

Combine like terms: -12 + 12 = 0
0 + 3r = -30 + 12
3r = -30 + 12

Combine like terms: -30 + 12 = -18
3r = -18

Divide each side by '3'.
r = -6

Simplifying
r = -6

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