How would i work this question? x+10y= -9 and x=5y+21

what you do is you want to get the x by it self so you would subtract the x and put it on the other side. like this: 10y=-9-x. OK so you would subtract -9 and put it on the other side like this: 9 + 10y=-x. but you can't have a negative x so u would do -9 + 10y=x.

Step-by-step explanation:

answer: the answer to your question is parallel

3: 2

step-by-step explanation:

shorter piece is 2: 3, so just reverse it, and you get 3: 2