13=3(5b-4)-10b

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Solution for 13=3(5b-4)-10b equation:


Simplifying
13 = 3(5b + -4) + -10b

Reorder the terms:
13 = 3(-4 + 5b) + -10b
13 = (-4 * 3 + 5b * 3) + -10b
13 = (-12 + 15b) + -10b

Combine like terms: 15b + -10b = 5b
13 = -12 + 5b

Solving
13 = -12 + 5b

Solving for variable 'b'.

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

Add '-5b' to each side of the equation.
13 + -5b = -12 + 5b + -5b

Combine like terms: 5b + -5b = 0
13 + -5b = -12 + 0
13 + -5b = -12

Add '-13' to each side of the equation.
13 + -13 + -5b = -12 + -13

Combine like terms: 13 + -13 = 0
0 + -5b = -12 + -13
-5b = -12 + -13

Combine like terms: -12 + -13 = -25
-5b = -25

Divide each side by '-5'.
b = 5

Simplifying
b = 5

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