20.5=b+15.5

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Solution for 20.5=b+15.5 equation:


Simplifying
20.5 = b + 15.5

Reorder the terms:
20.5 = 15.5 + b

Solving
20.5 = 15.5 + 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.
20.5 + -1b = 15.5 + b + -1b

Combine like terms: b + -1b = 0
20.5 + -1b = 15.5 + 0
20.5 + -1b = 15.5

Add '-20.5' to each side of the equation.
20.5 + -20.5 + -1b = 15.5 + -20.5

Combine like terms: 20.5 + -20.5 = 0.0
0.0 + -1b = 15.5 + -20.5
-1b = 15.5 + -20.5

Combine like terms: 15.5 + -20.5 = -5
-1b = -5

Divide each side by '-1'.
b = 5

Simplifying
b = 5

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