-15=-3(-b+8)-6(b-1)

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Solution for -15=-3(-b+8)-6(b-1) equation:


Simplifying
-15 = -3(-1b + 8) + -6(b + -1)

Reorder the terms:
-15 = -3(8 + -1b) + -6(b + -1)
-15 = (8 * -3 + -1b * -3) + -6(b + -1)
-15 = (-24 + 3b) + -6(b + -1)

Reorder the terms:
-15 = -24 + 3b + -6(-1 + b)
-15 = -24 + 3b + (-1 * -6 + b * -6)
-15 = -24 + 3b + (6 + -6b)

Reorder the terms:
-15 = -24 + 6 + 3b + -6b

Combine like terms: -24 + 6 = -18
-15 = -18 + 3b + -6b

Combine like terms: 3b + -6b = -3b
-15 = -18 + -3b

Solving
-15 = -18 + -3b

Solving for variable 'b'.

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

Add '3b' to each side of the equation.
-15 + 3b = -18 + -3b + 3b

Combine like terms: -3b + 3b = 0
-15 + 3b = -18 + 0
-15 + 3b = -18

Add '15' to each side of the equation.
-15 + 15 + 3b = -18 + 15

Combine like terms: -15 + 15 = 0
0 + 3b = -18 + 15
3b = -18 + 15

Combine like terms: -18 + 15 = -3
3b = -3

Divide each side by '3'.
b = -1

Simplifying
b = -1

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