-3(5b-9)+3(7b+4)=-b+8(b+2)

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Solution for -3(5b-9)+3(7b+4)=-b+8(b+2) equation:


Simplifying
-3(5b + -9) + 3(7b + 4) = -1b + 8(b + 2)

Reorder the terms:
-3(-9 + 5b) + 3(7b + 4) = -1b + 8(b + 2)
(-9 * -3 + 5b * -3) + 3(7b + 4) = -1b + 8(b + 2)
(27 + -15b) + 3(7b + 4) = -1b + 8(b + 2)

Reorder the terms:
27 + -15b + 3(4 + 7b) = -1b + 8(b + 2)
27 + -15b + (4 * 3 + 7b * 3) = -1b + 8(b + 2)
27 + -15b + (12 + 21b) = -1b + 8(b + 2)

Reorder the terms:
27 + 12 + -15b + 21b = -1b + 8(b + 2)

Combine like terms: 27 + 12 = 39
39 + -15b + 21b = -1b + 8(b + 2)

Combine like terms: -15b + 21b = 6b
39 + 6b = -1b + 8(b + 2)

Reorder the terms:
39 + 6b = -1b + 8(2 + b)
39 + 6b = -1b + (2 * 8 + b * 8)
39 + 6b = -1b + (16 + 8b)

Reorder the terms:
39 + 6b = 16 + -1b + 8b

Combine like terms: -1b + 8b = 7b
39 + 6b = 16 + 7b

Solving
39 + 6b = 16 + 7b

Solving for variable 'b'.

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

Add '-7b' to each side of the equation.
39 + 6b + -7b = 16 + 7b + -7b

Combine like terms: 6b + -7b = -1b
39 + -1b = 16 + 7b + -7b

Combine like terms: 7b + -7b = 0
39 + -1b = 16 + 0
39 + -1b = 16

Add '-39' to each side of the equation.
39 + -39 + -1b = 16 + -39

Combine like terms: 39 + -39 = 0
0 + -1b = 16 + -39
-1b = 16 + -39

Combine like terms: 16 + -39 = -23
-1b = -23

Divide each side by '-1'.
b = 23

Simplifying
b = 23

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