-15=b+27

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Solution for -15=b+27 equation:


Simplifying
-15 = b + 27

Reorder the terms:
-15 = 27 + b

Solving
-15 = 27 + b

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.
-15 + -1b = 27 + b + -1b

Combine like terms: b + -1b = 0
-15 + -1b = 27 + 0
-15 + -1b = 27

Add '15' to each side of the equation.
-15 + 15 + -1b = 27 + 15

Combine like terms: -15 + 15 = 0
0 + -1b = 27 + 15
-1b = 27 + 15

Combine like terms: 27 + 15 = 42
-1b = 42

Divide each side by '-1'.
b = -42

Simplifying
b = -42

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