-b-21-21=6-21

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Solution for -b-21-21=6-21 equation:


Simplifying
-1b + -21 + -21 = 6 + -21

Reorder the terms:
-21 + -21 + -1b = 6 + -21

Combine like terms: -21 + -21 = -42
-42 + -1b = 6 + -21

Combine like terms: 6 + -21 = -15
-42 + -1b = -15

Solving
-42 + -1b = -15

Solving for variable 'b'.

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

Add '42' to each side of the equation.
-42 + 42 + -1b = -15 + 42

Combine like terms: -42 + 42 = 0
0 + -1b = -15 + 42
-1b = -15 + 42

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

Divide each side by '-1'.
b = -27

Simplifying
b = -27

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