(9b-7)-4(2b+4)=-3

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Solution for (9b-7)-4(2b+4)=-3 equation:


Simplifying
(9b + -7) + -4(2b + 4) = -3

Reorder the terms:
(-7 + 9b) + -4(2b + 4) = -3

Remove parenthesis around (-7 + 9b)
-7 + 9b + -4(2b + 4) = -3

Reorder the terms:
-7 + 9b + -4(4 + 2b) = -3
-7 + 9b + (4 * -4 + 2b * -4) = -3
-7 + 9b + (-16 + -8b) = -3

Reorder the terms:
-7 + -16 + 9b + -8b = -3

Combine like terms: -7 + -16 = -23
-23 + 9b + -8b = -3

Combine like terms: 9b + -8b = 1b
-23 + 1b = -3

Solving
-23 + 1b = -3

Solving for variable 'b'.

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

Add '23' to each side of the equation.
-23 + 23 + 1b = -3 + 23

Combine like terms: -23 + 23 = 0
0 + 1b = -3 + 23
1b = -3 + 23

Combine like terms: -3 + 23 = 20
1b = 20

Divide each side by '1'.
b = 20

Simplifying
b = 20

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