Ask
your own question, for FREE!
Mathematics
48 Online
OpenStudy (anonymous):
Given: 2x+3y=12 2x-y=4 What is the value of x + y? Please explain! Thanxs!!!
Still Need Help?
Join the QuestionCove community and study together with friends!
OpenStudy (anonymous):
Weird question at first sight but here goes. Subtract equation 2 from equation 1 giving 4y = 8 Here's why, 2x - 2x = 0, 3y - (-y) = 4y and 12 -4 = 8 hence 4y = 8 From this we get y = 2 by dividing both sides by 4. Substitute the value of y ( 2 remember) into second equation to discover value x. 2x - 2 = 4 which implies (by adding 2 to both sides) 2x = 6 and hence x = 3 Therefore the answer to x+ y is 2 +3 = 5
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
Trickjoker:
My ranking of every song on every Nirvana album released before Kurts passing BLEACH This was very difficult to do because I love every song on this album!
Andydegummibear:
why do people make fun of a death of a husband father and loving person charlie k
Andydegummibear:
why do people make fun of a death of a husband father and loving person charlie k
dontcare:
whats the best place to get a first tattoo at? Its gonna be a skull with pink and
xXAikoXx:
Romanticism had its roots in the individualism of the ________________, the Reformation's reverence to God in his natural state, and The Englightenment's de
xXAikoXx:
Any particular thoughts on the Holocaust in Germany that happened between 1941 an
xXAikoXx:
Does anybody else have rapid changes in their weight? Sometimes I would lose a lot of weight, gain more, lose again, and the cycle continues lol.
Shadowandsage:
The Ghost (I did the story for a fan bc they asked on their message so now am seeing if u guys like it so this is second attempt) I was driving to the woods
breiadabrattzz:
Anyone opinons on the gurl tht died on the train or the guy tht got beheaded in m
Trickjoker:
My ranking of every song on every Nirvana album released before Kurts passing BLEACH This was very difficult to do because I love every song on this album!
5 minutes ago
2 Replies
0 Medals
Andydegummibear:
why do people make fun of a death of a husband father and loving person charlie k
2 minutes ago
44 Replies
8 Medals
Andydegummibear:
why do people make fun of a death of a husband father and loving person charlie k
13 hours ago
0 Replies
0 Medals
dontcare:
whats the best place to get a first tattoo at? Its gonna be a skull with pink and
13 hours ago
9 Replies
0 Medals
xXAikoXx:
Romanticism had its roots in the individualism of the ________________, the Reformation's reverence to God in his natural state, and The Englightenment's de
15 hours ago
2 Replies
2 Medals
xXAikoXx:
Any particular thoughts on the Holocaust in Germany that happened between 1941 an
14 hours ago
2 Replies
0 Medals
xXAikoXx:
Does anybody else have rapid changes in their weight? Sometimes I would lose a lot of weight, gain more, lose again, and the cycle continues lol.
16 hours ago
15 Replies
2 Medals
Shadowandsage:
The Ghost (I did the story for a fan bc they asked on their message so now am seeing if u guys like it so this is second attempt) I was driving to the woods
58 minutes ago
7 Replies
1 Medal
breiadabrattzz:
Anyone opinons on the gurl tht died on the train or the guy tht got beheaded in m
1 hour ago
18 Replies
0 Medals