24=-3(21-b)+2(b-4)

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Solution for 24=-3(21-b)+2(b-4) equation:


Simplifying
24 = -3(21 + -1b) + 2(b + -4)
24 = (21 * -3 + -1b * -3) + 2(b + -4)
24 = (-63 + 3b) + 2(b + -4)

Reorder the terms:
24 = -63 + 3b + 2(-4 + b)
24 = -63 + 3b + (-4 * 2 + b * 2)
24 = -63 + 3b + (-8 + 2b)

Reorder the terms:
24 = -63 + -8 + 3b + 2b

Combine like terms: -63 + -8 = -71
24 = -71 + 3b + 2b

Combine like terms: 3b + 2b = 5b
24 = -71 + 5b

Solving
24 = -71 + 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.
24 + -5b = -71 + 5b + -5b

Combine like terms: 5b + -5b = 0
24 + -5b = -71 + 0
24 + -5b = -71

Add '-24' to each side of the equation.
24 + -24 + -5b = -71 + -24

Combine like terms: 24 + -24 = 0
0 + -5b = -71 + -24
-5b = -71 + -24

Combine like terms: -71 + -24 = -95
-5b = -95

Divide each side by '-5'.
b = 19

Simplifying
b = 19

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