Ask
your own question, for FREE!
Mathematics
25 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
Sk4llsNB0n3s:
I need tips on how to improve my poems and lyrics. Here's one poem to see if I need any pointers: This poem is called Fall: We walked down the beach When it
October4:
u201cYou Left Me With the Skyu201d You tore the sky in half that night, and left me staring at the wound.
gelphielvr:
Does anyone know how electron configuration works? I need a good explanation pls
Taku12:
idk how to feel about my shading on a project I'm doing in art is it good?
75:
How to convince your teacher you didn't use ai but they wont believe you?
xXAikoXx:
What's the difference between ethnicity and race? (I GENUINELY do NOT understand the difference.
Bounty:
sleep breathe repeat wakeup breathe Everyday the same agonizing pain like a worn
curriful:
if a keystone species is removed from an ecosystem, what is a likely outcome?
Sk4llsNB0n3s:
I need tips on how to improve my poems and lyrics. Here's one poem to see if I need any pointers: This poem is called Fall: We walked down the beach When it
8 hours ago
0 Replies
0 Medals
October4:
u201cYou Left Me With the Skyu201d You tore the sky in half that night, and left me staring at the wound.
1 hour ago
9 Replies
0 Medals
gelphielvr:
Does anyone know how electron configuration works? I need a good explanation pls
5 hours ago
4 Replies
1 Medal
Taku12:
idk how to feel about my shading on a project I'm doing in art is it good?
11 hours ago
16 Replies
1 Medal
75:
How to convince your teacher you didn't use ai but they wont believe you?
15 hours ago
4 Replies
2 Medals
xXAikoXx:
What's the difference between ethnicity and race? (I GENUINELY do NOT understand the difference.
19 hours ago
3 Replies
1 Medal
Bounty:
sleep breathe repeat wakeup breathe Everyday the same agonizing pain like a worn
1 day ago
6 Replies
1 Medal
curriful:
if a keystone species is removed from an ecosystem, what is a likely outcome?
1 day ago
45 Replies
3 Medals