11-1=12+4a

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Solution for 11-1=12+4a equation:


Simplifying
11 + -1 = 12 + 4a

Combine like terms: 11 + -1 = 10
10 = 12 + 4a

Solving
10 = 12 + 4a

Solving for variable 'a'.

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

Add '-4a' to each side of the equation.
10 + -4a = 12 + 4a + -4a

Combine like terms: 4a + -4a = 0
10 + -4a = 12 + 0
10 + -4a = 12

Add '-10' to each side of the equation.
10 + -10 + -4a = 12 + -10

Combine like terms: 10 + -10 = 0
0 + -4a = 12 + -10
-4a = 12 + -10

Combine like terms: 12 + -10 = 2
-4a = 2

Divide each side by '-4'.
a = -0.5

Simplifying
a = -0.5

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