Answer:
4x+3x+2x=180
9x=180
x=20
100/150 simplified to lowest terms is 2/3.
Step-by-step explanation:
4x+3y=8
x-2y=13
4x-4y=13
(4x-4x) - (3y+4y)= 5
7y=5
y=5/7
Plug this back to one of the original equations!
Good luck!