38=5(3b-6)+7(-b+4)

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Solution for 38=5(3b-6)+7(-b+4) equation:


Simplifying
38 = 5(3b + -6) + 7(-1b + 4)

Reorder the terms:
38 = 5(-6 + 3b) + 7(-1b + 4)
38 = (-6 * 5 + 3b * 5) + 7(-1b + 4)
38 = (-30 + 15b) + 7(-1b + 4)

Reorder the terms:
38 = -30 + 15b + 7(4 + -1b)
38 = -30 + 15b + (4 * 7 + -1b * 7)
38 = -30 + 15b + (28 + -7b)

Reorder the terms:
38 = -30 + 28 + 15b + -7b

Combine like terms: -30 + 28 = -2
38 = -2 + 15b + -7b

Combine like terms: 15b + -7b = 8b
38 = -2 + 8b

Solving
38 = -2 + 8b

Solving for variable 'b'.

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

Add '-8b' to each side of the equation.
38 + -8b = -2 + 8b + -8b

Combine like terms: 8b + -8b = 0
38 + -8b = -2 + 0
38 + -8b = -2

Add '-38' to each side of the equation.
38 + -38 + -8b = -2 + -38

Combine like terms: 38 + -38 = 0
0 + -8b = -2 + -38
-8b = -2 + -38

Combine like terms: -2 + -38 = -40
-8b = -40

Divide each side by '-8'.
b = 5

Simplifying
b = 5

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