11=12-a

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Solution for 11=12-a equation:


Simplifying
11 = 12 + -1a

Solving
11 = 12 + -1a

Solving for variable 'a'.

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

Add 'a' to each side of the equation.
11 + a = 12 + -1a + a

Combine like terms: -1a + a = 0
11 + a = 12 + 0
11 + a = 12

Add '-11' to each side of the equation.
11 + -11 + a = 12 + -11

Combine like terms: 11 + -11 = 0
0 + a = 12 + -11
a = 12 + -11

Combine like terms: 12 + -11 = 1
a = 1

Simplifying
a = 1

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