(13b-7)-4(3b+4)=-5

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Solution for (13b-7)-4(3b+4)=-5 equation:


Simplifying
(13b + -7) + -4(3b + 4) = -5

Reorder the terms:
(-7 + 13b) + -4(3b + 4) = -5

Remove parenthesis around (-7 + 13b)
-7 + 13b + -4(3b + 4) = -5

Reorder the terms:
-7 + 13b + -4(4 + 3b) = -5
-7 + 13b + (4 * -4 + 3b * -4) = -5
-7 + 13b + (-16 + -12b) = -5

Reorder the terms:
-7 + -16 + 13b + -12b = -5

Combine like terms: -7 + -16 = -23
-23 + 13b + -12b = -5

Combine like terms: 13b + -12b = 1b
-23 + 1b = -5

Solving
-23 + 1b = -5

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 = -5 + 23

Combine like terms: -23 + 23 = 0
0 + 1b = -5 + 23
1b = -5 + 23

Combine like terms: -5 + 23 = 18
1b = 18

Divide each side by '1'.
b = 18

Simplifying
b = 18

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