3. Which value of a below solves the equation: 3a + 1=-a+3?

(1) - 6

(2) 8

(3) - 1

(4) s

None,

a=1/2

Step-by-step explanation:

Lets group together 'a' terms in one side of equations and lone terms on the other.

To do this, simply sum 'a' to both sides of equation, and also, subtract - 1 (lone term).

3a+a=3-1

this leads to

4a=2

Where we obtain a=1/2