10a+11=121-a

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Solution for 10a+11=121-a equation:


Simplifying
10a + 11 = 121 + -1a

Reorder the terms:
11 + 10a = 121 + -1a

Solving
11 + 10a = 121 + -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 + 10a + a = 121 + -1a + a

Combine like terms: 10a + a = 11a
11 + 11a = 121 + -1a + a

Combine like terms: -1a + a = 0
11 + 11a = 121 + 0
11 + 11a = 121

Add '-11' to each side of the equation.
11 + -11 + 11a = 121 + -11

Combine like terms: 11 + -11 = 0
0 + 11a = 121 + -11
11a = 121 + -11

Combine like terms: 121 + -11 = 110
11a = 110

Divide each side by '11'.
a = 10

Simplifying
a = 10

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