15-b=-6

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Solution for 15-b=-6 equation: 


Simplifying
15 + -1b = -6

Solving
15 + -1b = -6

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 = -6 + -15

Combine like terms: 15 + -15 = 0
0 + -1b = -6 + -15
-1b = -6 + -15

Combine like terms: -6 + -15 = -21
-1b = -21

Divide each side by '-1'.
b = 21

Simplifying
b = 21

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