Question

12
x
−
15
=
6
−
3
x

Answer 1

x= 7/5 (1 2/5 or 1.4)

Explanation:

Move the variable to the left-hand side and change its sign.

12x-15+3x=6

Move the constant to the right-hand side and change its sign.

12x+3x=6+15

Collect like terms.

15x=21

Divide both sides of the equation by 15.

x=7/5 (1 2/5 or 1.4)