Answer:
28
Step-by-step explanation:
2x + 3x + 40 =180
5x= 180 - 140
5x=140
x= 28
Answer:
7/10
Step-by-step explanation:
0.7+0.07+0.007=0.777
fraction=777/1000
simplest form: 777/1000=7/10
srry if im wrong
hope this helps :3
Multiply the first equation by -1
-3x-y=-4
2x+y=5
Add them up
-x=1
So x=-1
And y=7
So the first option is correct
Answer: I think it's D
Step-by-step explanation: