(13b-3)-3(4b-2)=-4

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Solution for (13b-3)-3(4b-2)=-4 equation:


Simplifying
(13b + -3) + -3(4b + -2) = -4

Reorder the terms:
(-3 + 13b) + -3(4b + -2) = -4

Remove parenthesis around (-3 + 13b)
-3 + 13b + -3(4b + -2) = -4

Reorder the terms:
-3 + 13b + -3(-2 + 4b) = -4
-3 + 13b + (-2 * -3 + 4b * -3) = -4
-3 + 13b + (6 + -12b) = -4

Reorder the terms:
-3 + 6 + 13b + -12b = -4

Combine like terms: -3 + 6 = 3
3 + 13b + -12b = -4

Combine like terms: 13b + -12b = 1b
3 + 1b = -4

Solving
3 + 1b = -4

Solving for variable 'b'.

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

Add '-3' to each side of the equation.
3 + -3 + 1b = -4 + -3

Combine like terms: 3 + -3 = 0
0 + 1b = -4 + -3
1b = -4 + -3

Combine like terms: -4 + -3 = -7
1b = -7

Divide each side by '1'.
b = -7

Simplifying
b = -7

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