(13b-9)-4(3b+1)=-2

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Solution for (13b-9)-4(3b+1)=-2 equation:


Simplifying
(13b + -9) + -4(3b + 1) = -2

Reorder the terms:
(-9 + 13b) + -4(3b + 1) = -2

Remove parenthesis around (-9 + 13b)
-9 + 13b + -4(3b + 1) = -2

Reorder the terms:
-9 + 13b + -4(1 + 3b) = -2
-9 + 13b + (1 * -4 + 3b * -4) = -2
-9 + 13b + (-4 + -12b) = -2

Reorder the terms:
-9 + -4 + 13b + -12b = -2

Combine like terms: -9 + -4 = -13
-13 + 13b + -12b = -2

Combine like terms: 13b + -12b = 1b
-13 + 1b = -2

Solving
-13 + 1b = -2

Solving for variable 'b'.

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

Add '13' to each side of the equation.
-13 + 13 + 1b = -2 + 13

Combine like terms: -13 + 13 = 0
0 + 1b = -2 + 13
1b = -2 + 13

Combine like terms: -2 + 13 = 11
1b = 11

Divide each side by '1'.
b = 11

Simplifying
b = 11

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