(9b-9)-2(4b+1)=-5

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Solution for (9b-9)-2(4b+1)=-5 equation:


Simplifying
(9b + -9) + -2(4b + 1) = -5

Reorder the terms:
(-9 + 9b) + -2(4b + 1) = -5

Remove parenthesis around (-9 + 9b)
-9 + 9b + -2(4b + 1) = -5

Reorder the terms:
-9 + 9b + -2(1 + 4b) = -5
-9 + 9b + (1 * -2 + 4b * -2) = -5
-9 + 9b + (-2 + -8b) = -5

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

Combine like terms: -9 + -2 = -11
-11 + 9b + -8b = -5

Combine like terms: 9b + -8b = 1b
-11 + 1b = -5

Solving
-11 + 1b = -5

Solving for variable 'b'.

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

Add '11' to each side of the equation.
-11 + 11 + 1b = -5 + 11

Combine like terms: -11 + 11 = 0
0 + 1b = -5 + 11
1b = -5 + 11

Combine like terms: -5 + 11 = 6
1b = 6

Divide each side by '1'.
b = 6

Simplifying
b = 6

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