18=-3(22-b)+3(b-4)

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Solution for 18=-3(22-b)+3(b-4) equation:


Simplifying
18 = -3(22 + -1b) + 3(b + -4)
18 = (22 * -3 + -1b * -3) + 3(b + -4)
18 = (-66 + 3b) + 3(b + -4)

Reorder the terms:
18 = -66 + 3b + 3(-4 + b)
18 = -66 + 3b + (-4 * 3 + b * 3)
18 = -66 + 3b + (-12 + 3b)

Reorder the terms:
18 = -66 + -12 + 3b + 3b

Combine like terms: -66 + -12 = -78
18 = -78 + 3b + 3b

Combine like terms: 3b + 3b = 6b
18 = -78 + 6b

Solving
18 = -78 + 6b

Solving for variable 'b'.

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

Add '-6b' to each side of the equation.
18 + -6b = -78 + 6b + -6b

Combine like terms: 6b + -6b = 0
18 + -6b = -78 + 0
18 + -6b = -78

Add '-18' to each side of the equation.
18 + -18 + -6b = -78 + -18

Combine like terms: 18 + -18 = 0
0 + -6b = -78 + -18
-6b = -78 + -18

Combine like terms: -78 + -18 = -96
-6b = -96

Divide each side by '-6'.
b = 16

Simplifying
b = 16

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