-21=5.5+b-2

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Solution for -21=5.5+b-2 equation:


Simplifying
-21 = 5.5 + b + -2

Reorder the terms:
-21 = 5.5 + -2 + b

Combine like terms: 5.5 + -2 = 3.5
-21 = 3.5 + b

Solving
-21 = 3.5 + 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.
-21 + -1b = 3.5 + b + -1b

Combine like terms: b + -1b = 0
-21 + -1b = 3.5 + 0
-21 + -1b = 3.5

Add '21' to each side of the equation.
-21 + 21 + -1b = 3.5 + 21

Combine like terms: -21 + 21 = 0
0 + -1b = 3.5 + 21
-1b = 3.5 + 21

Combine like terms: 3.5 + 21 = 24.5
-1b = 24.5

Divide each side by '-1'.
b = -24.5

Simplifying
b = -24.5

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