=12+2(3b+4)-9b

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Solution for =12+2(3b+4)-9b equation:


Simplifying
0 = 12 + 2(3b + 4) + -9b

Reorder the terms:
0 = 12 + 2(4 + 3b) + -9b
0 = 12 + (4 * 2 + 3b * 2) + -9b
0 = 12 + (8 + 6b) + -9b

Combine like terms: 12 + 8 = 20
0 = 20 + 6b + -9b

Combine like terms: 6b + -9b = -3b
0 = 20 + -3b

Solving
0 = 20 + -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.
0 + 3b = 20 + -3b + 3b
Remove the zero:
3b = 20 + -3b + 3b

Combine like terms: -3b + 3b = 0
3b = 20 + 0
3b = 20

Divide each side by '3'.
b = 6.666666667

Simplifying
b = 6.666666667

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