27=20+b

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Solution for 27=20+b equation:


Simplifying
27 = 20 + b

Solving
27 = 20 + 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.
27 + -1b = 20 + b + -1b

Combine like terms: b + -1b = 0
27 + -1b = 20 + 0
27 + -1b = 20

Add '-27' to each side of the equation.
27 + -27 + -1b = 20 + -27

Combine like terms: 27 + -27 = 0
0 + -1b = 20 + -27
-1b = 20 + -27

Combine like terms: 20 + -27 = -7
-1b = -7

Divide each side by '-1'.
b = 7

Simplifying
b = 7

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