Answer:[tex]15-x=2x\\[/tex]
add x to the right side
[tex]15=3x\\[/tex]
divide 15 by 3 you get 5
plug 5 back to the euqation
15-5=10
2x5=10
Step-by-step explanation:
x=5
15 - x = 2x
15= 2x + x
15= 3x
5=x
