3a-1+(-1a)=

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Solution for 3a-1+(-1a)= equation: 


Simplifying
3a + -1 + (-1a) = 0

Reorder the terms:
-1 + 3a + (-1a) = 0

Combine like terms: 3a + (-1a) = 2a
-1 + 2a = 0

Solving
-1 + 2a = 0

Solving for variable 'a'.

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

Add '1' to each side of the equation.
-1 + 1 + 2a = 0 + 1

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

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

Divide each side by '2'.
a = 0.5

Simplifying
a = 0.5

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