Ask
your own question, for FREE!
Mathematics
9 Online
solve the system of equations using elimination 2x+4y=-8 -3x+4y=2
Still Need Help?
Join the QuestionCove community and study together with friends!
change the sign on one of the equations and you can get rid of the y
Subtract second equation from first:- 2x+4y=-8 -(-3x)-(4y)=-2 ------------- 5x=-10 x=-10/5=2
Now put the value of 'x' in any equation & find 'y' :)
Can u do that from now???
y=-16 ?
Still Need Help?
Join the QuestionCove community and study together with friends!
and x=-2 ?
Wait I have done a mistake it's x=-2 2x+4y=-8
2(-2)+4y=-8 -4+4y=-8 4y=-8+4 4y=-4 y=-4/4=-1
so y=-1 ?
yes why not ;)
Still Need Help?
Join the QuestionCove community and study together with friends!
Understand now :)
sorry it took so long to reply, i got busy but i got x=2, y=3
See my solution @jkd13 :)
haha we made the same mistake but yes your right.
your second answer
Still Need Help?
Join the QuestionCove community and study together with friends!
it's right:)
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
Countless7Echos:
Aye.. I need actually some help on the shading here.. if the light is from above too I just feel something is off.
kaelynw:
tried a lil smt, the arm is off but i like the other stuff
Countless7Echos:
I don't know just no sketch doodle day :p finished a video already so I'm pretty
Ferrari:
Depression Hi, it's me, Jordan (ferrari). It's supposed to be the Fourth of July but I feel kinda depressed and mad at myself for no reason.
6 hours ago
19 Replies
3 Medals
18 hours ago
27 Replies
3 Medals
2 days ago
9 Replies
2 Medals
2 days ago
13 Replies
1 Medal