-80=8b-15+5b

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Solution for -80=8b-15+5b equation:


Simplifying
-80 = 8b + -15 + 5b

Reorder the terms:
-80 = -15 + 8b + 5b

Combine like terms: 8b + 5b = 13b
-80 = -15 + 13b

Solving
-80 = -15 + 13b

Solving for variable 'b'.

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

Add '-13b' to each side of the equation.
-80 + -13b = -15 + 13b + -13b

Combine like terms: 13b + -13b = 0
-80 + -13b = -15 + 0
-80 + -13b = -15

Add '80' to each side of the equation.
-80 + 80 + -13b = -15 + 80

Combine like terms: -80 + 80 = 0
0 + -13b = -15 + 80
-13b = -15 + 80

Combine like terms: -15 + 80 = 65
-13b = 65

Divide each side by '-13'.
b = -5

Simplifying
b = -5

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