15-b=80

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Solution for 15-b=80 equation: 


Simplifying
15 + -1b = 80

Solving
15 + -1b = 80

Solving for variable 'b'.

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

Add '-15' to each side of the equation.
15 + -15 + -1b = 80 + -15

Combine like terms: 15 + -15 = 0
0 + -1b = 80 + -15
-1b = 80 + -15

Combine like terms: 80 + -15 = 65
-1b = 65

Divide each side by '-1'.
b = -65

Simplifying
b = -65

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