3a-1=4+a

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Solution for 3a-1=4+a equation:


Simplifying
3a + -1 = 4 + a

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

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

Combine like terms: 3a + -1a = 2a
-1 + 2a = 4 + a + -1a

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

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

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

Combine like terms: 4 + 1 = 5
2a = 5

Divide each side by '2'.
a = 2.5

Simplifying
a = 2.5

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