(9b-2)-4(2b+4)=-5

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Solution for (9b-2)-4(2b+4)=-5 equation:


Simplifying
(9b + -2) + -4(2b + 4) = -5

Reorder the terms:
(-2 + 9b) + -4(2b + 4) = -5

Remove parenthesis around (-2 + 9b)
-2 + 9b + -4(2b + 4) = -5

Reorder the terms:
-2 + 9b + -4(4 + 2b) = -5
-2 + 9b + (4 * -4 + 2b * -4) = -5
-2 + 9b + (-16 + -8b) = -5

Reorder the terms:
-2 + -16 + 9b + -8b = -5

Combine like terms: -2 + -16 = -18
-18 + 9b + -8b = -5

Combine like terms: 9b + -8b = 1b
-18 + 1b = -5

Solving
-18 + 1b = -5

Solving for variable 'b'.

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

Add '18' to each side of the equation.
-18 + 18 + 1b = -5 + 18

Combine like terms: -18 + 18 = 0
0 + 1b = -5 + 18
1b = -5 + 18

Combine like terms: -5 + 18 = 13
1b = 13

Divide each side by '1'.
b = 13

Simplifying
b = 13

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