1-12b-7+8b=-4(b-3)-3(9-b)

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Solution for 1-12b-7+8b=-4(b-3)-3(9-b) equation:


Simplifying
1 + -12b + -7 + 8b = -4(b + -3) + -3(9 + -1b)

Reorder the terms:
1 + -7 + -12b + 8b = -4(b + -3) + -3(9 + -1b)

Combine like terms: 1 + -7 = -6
-6 + -12b + 8b = -4(b + -3) + -3(9 + -1b)

Combine like terms: -12b + 8b = -4b
-6 + -4b = -4(b + -3) + -3(9 + -1b)

Reorder the terms:
-6 + -4b = -4(-3 + b) + -3(9 + -1b)
-6 + -4b = (-3 * -4 + b * -4) + -3(9 + -1b)
-6 + -4b = (12 + -4b) + -3(9 + -1b)
-6 + -4b = 12 + -4b + (9 * -3 + -1b * -3)
-6 + -4b = 12 + -4b + (-27 + 3b)

Reorder the terms:
-6 + -4b = 12 + -27 + -4b + 3b

Combine like terms: 12 + -27 = -15
-6 + -4b = -15 + -4b + 3b

Combine like terms: -4b + 3b = -1b
-6 + -4b = -15 + -1b

Solving
-6 + -4b = -15 + -1b

Solving for variable 'b'.

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

Add 'b' to each side of the equation.
-6 + -4b + b = -15 + -1b + b

Combine like terms: -4b + b = -3b
-6 + -3b = -15 + -1b + b

Combine like terms: -1b + b = 0
-6 + -3b = -15 + 0
-6 + -3b = -15

Add '6' to each side of the equation.
-6 + 6 + -3b = -15 + 6

Combine like terms: -6 + 6 = 0
0 + -3b = -15 + 6
-3b = -15 + 6

Combine like terms: -15 + 6 = -9
-3b = -9

Divide each side by '-3'.
b = 3

Simplifying
b = 3

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