Question

Solve 3x-x+2=12A: -5B: 4C: 7 D: 5

Answer 1

3x-x+2=12

Add like terms:

(3x-x)+2=12

2x+2=12

Subtract 2 from both sides:

2x+2-2=12-2

2x=10

Finally, divide both sides by 2:

2x/2=10/2

x=5