11-B=21

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Solution for 11-B=21 equation: 


Simplifying
11 + -1B = 21

Solving
11 + -1B = 21

Solving for variable 'B'.

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

Add '-11' to each side of the equation.
11 + -11 + -1B = 21 + -11

Combine like terms: 11 + -11 = 0
0 + -1B = 21 + -11
-1B = 21 + -11

Combine like terms: 21 + -11 = 10
-1B = 10

Divide each side by '-1'.
B = -10

Simplifying
B = -10

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