12-3(-1+b)=18+5b

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Solution for 12-3(-1+b)=18+5b equation:


Simplifying
12 + -3(-1 + b) = 18 + 5b
12 + (-1 * -3 + b * -3) = 18 + 5b
12 + (3 + -3b) = 18 + 5b

Combine like terms: 12 + 3 = 15
15 + -3b = 18 + 5b

Solving
15 + -3b = 18 + 5b

Solving for variable 'b'.

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

Add '-5b' to each side of the equation.
15 + -3b + -5b = 18 + 5b + -5b

Combine like terms: -3b + -5b = -8b
15 + -8b = 18 + 5b + -5b

Combine like terms: 5b + -5b = 0
15 + -8b = 18 + 0
15 + -8b = 18

Add '-15' to each side of the equation.
15 + -15 + -8b = 18 + -15

Combine like terms: 15 + -15 = 0
0 + -8b = 18 + -15
-8b = 18 + -15

Combine like terms: 18 + -15 = 3
-8b = 3

Divide each side by '-8'.
b = -0.375

Simplifying
b = -0.375

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