19=3(3b-4)-2(4b+5)

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Solution for 19=3(3b-4)-2(4b+5) equation:


Simplifying
19 = 3(3b + -4) + -2(4b + 5)

Reorder the terms:
19 = 3(-4 + 3b) + -2(4b + 5)
19 = (-4 * 3 + 3b * 3) + -2(4b + 5)
19 = (-12 + 9b) + -2(4b + 5)

Reorder the terms:
19 = -12 + 9b + -2(5 + 4b)
19 = -12 + 9b + (5 * -2 + 4b * -2)
19 = -12 + 9b + (-10 + -8b)

Reorder the terms:
19 = -12 + -10 + 9b + -8b

Combine like terms: -12 + -10 = -22
19 = -22 + 9b + -8b

Combine like terms: 9b + -8b = 1b
19 = -22 + 1b

Solving
19 = -22 + 1b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
19 + -1b = -22 + 1b + -1b

Combine like terms: 1b + -1b = 0
19 + -1b = -22 + 0
19 + -1b = -22

Add '-19' to each side of the equation.
19 + -19 + -1b = -22 + -19

Combine like terms: 19 + -19 = 0
0 + -1b = -22 + -19
-1b = -22 + -19

Combine like terms: -22 + -19 = -41
-1b = -41

Divide each side by '-1'.
b = 41

Simplifying
b = 41

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