3a-4=8-a

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Solution for 3a-4=8-a equation:


Simplifying
3a + -4 = 8 + -1a

Reorder the terms:
-4 + 3a = 8 + -1a

Solving
-4 + 3a = 8 + -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.
-4 + 3a + a = 8 + -1a + a

Combine like terms: 3a + a = 4a
-4 + 4a = 8 + -1a + a

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

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

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

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

Divide each side by '4'.
a = 3

Simplifying
a = 3

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