a+12=2a+4

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Solution for a+12=2a+4 equation:


Simplifying
a + 12 = 2a + 4

Reorder the terms:
12 + a = 2a + 4

Reorder the terms:
12 + a = 4 + 2a

Solving
12 + a = 4 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
12 + a + -2a = 4 + 2a + -2a

Combine like terms: a + -2a = -1a
12 + -1a = 4 + 2a + -2a

Combine like terms: 2a + -2a = 0
12 + -1a = 4 + 0
12 + -1a = 4

Add '-12' to each side of the equation.
12 + -12 + -1a = 4 + -12

Combine like terms: 12 + -12 = 0
0 + -1a = 4 + -12
-1a = 4 + -12

Combine like terms: 4 + -12 = -8
-1a = -8

Divide each side by '-1'.
a = 8

Simplifying
a = 8

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