(7b-8)-2(3b+4)=-7

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Solution for (7b-8)-2(3b+4)=-7 equation:


Simplifying
(7b + -8) + -2(3b + 4) = -7

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

Remove parenthesis around (-8 + 7b)
-8 + 7b + -2(3b + 4) = -7

Reorder the terms:
-8 + 7b + -2(4 + 3b) = -7
-8 + 7b + (4 * -2 + 3b * -2) = -7
-8 + 7b + (-8 + -6b) = -7

Reorder the terms:
-8 + -8 + 7b + -6b = -7

Combine like terms: -8 + -8 = -16
-16 + 7b + -6b = -7

Combine like terms: 7b + -6b = 1b
-16 + 1b = -7

Solving
-16 + 1b = -7

Solving for variable 'b'.

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

Add '16' to each side of the equation.
-16 + 16 + 1b = -7 + 16

Combine like terms: -16 + 16 = 0
0 + 1b = -7 + 16
1b = -7 + 16

Combine like terms: -7 + 16 = 9
1b = 9

Divide each side by '1'.
b = 9

Simplifying
b = 9

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