2a-8=a+4

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Solution for 2a-8=a+4 equation:


Simplifying
2a + -8 = a + 4

Reorder the terms:
-8 + 2a = a + 4

Reorder the terms:
-8 + 2a = 4 + a

Solving
-8 + 2a = 4 + a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
-8 + 2a + -1a = 4 + a + -1a

Combine like terms: 2a + -1a = 1a
-8 + 1a = 4 + a + -1a

Combine like terms: a + -1a = 0
-8 + 1a = 4 + 0
-8 + 1a = 4

Add '8' to each side of the equation.
-8 + 8 + 1a = 4 + 8

Combine like terms: -8 + 8 = 0
0 + 1a = 4 + 8
1a = 4 + 8

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

Divide each side by '1'.
a = 12

Simplifying
a = 12

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