(9b-9)-4(2b+3)=-6

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Solution for (9b-9)-4(2b+3)=-6 equation:


Simplifying
(9b + -9) + -4(2b + 3) = -6

Reorder the terms:
(-9 + 9b) + -4(2b + 3) = -6

Remove parenthesis around (-9 + 9b)
-9 + 9b + -4(2b + 3) = -6

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

Reorder the terms:
-9 + -12 + 9b + -8b = -6

Combine like terms: -9 + -12 = -21
-21 + 9b + -8b = -6

Combine like terms: 9b + -8b = 1b
-21 + 1b = -6

Solving
-21 + 1b = -6

Solving for variable 'b'.

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

Add '21' to each side of the equation.
-21 + 21 + 1b = -6 + 21

Combine like terms: -21 + 21 = 0
0 + 1b = -6 + 21
1b = -6 + 21

Combine like terms: -6 + 21 = 15
1b = 15

Divide each side by '1'.
b = 15

Simplifying
b = 15

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