(5b-7)-2(2b+4)=-3

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Solution for (5b-7)-2(2b+4)=-3 equation:


Simplifying
(5b + -7) + -2(2b + 4) = -3

Reorder the terms:
(-7 + 5b) + -2(2b + 4) = -3

Remove parenthesis around (-7 + 5b)
-7 + 5b + -2(2b + 4) = -3

Reorder the terms:
-7 + 5b + -2(4 + 2b) = -3
-7 + 5b + (4 * -2 + 2b * -2) = -3
-7 + 5b + (-8 + -4b) = -3

Reorder the terms:
-7 + -8 + 5b + -4b = -3

Combine like terms: -7 + -8 = -15
-15 + 5b + -4b = -3

Combine like terms: 5b + -4b = 1b
-15 + 1b = -3

Solving
-15 + 1b = -3

Solving for variable 'b'.

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

Add '15' to each side of the equation.
-15 + 15 + 1b = -3 + 15

Combine like terms: -15 + 15 = 0
0 + 1b = -3 + 15
1b = -3 + 15

Combine like terms: -3 + 15 = 12
1b = 12

Divide each side by '1'.
b = 12

Simplifying
b = 12

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