(9b-8)-4(2b+1)=-4

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Solution for (9b-8)-4(2b+1)=-4 equation:


Simplifying
(9b + -8) + -4(2b + 1) = -4

Reorder the terms:
(-8 + 9b) + -4(2b + 1) = -4

Remove parenthesis around (-8 + 9b)
-8 + 9b + -4(2b + 1) = -4

Reorder the terms:
-8 + 9b + -4(1 + 2b) = -4
-8 + 9b + (1 * -4 + 2b * -4) = -4
-8 + 9b + (-4 + -8b) = -4

Reorder the terms:
-8 + -4 + 9b + -8b = -4

Combine like terms: -8 + -4 = -12
-12 + 9b + -8b = -4

Combine like terms: 9b + -8b = 1b
-12 + 1b = -4

Solving
-12 + 1b = -4

Solving for variable 'b'.

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

Add '12' to each side of the equation.
-12 + 12 + 1b = -4 + 12

Combine like terms: -12 + 12 = 0
0 + 1b = -4 + 12
1b = -4 + 12

Combine like terms: -4 + 12 = 8
1b = 8

Divide each side by '1'.
b = 8

Simplifying
b = 8

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