Question

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

(1) -6
(2) 8
(3) -1
(4) s

Answer 1

None,

a=1/2

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