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Mathematics 24 Online
OpenStudy (anonymous):

n

OpenStudy (anonymous):

It's one of these but I'm not sure.

jimthompson5910 (jim_thompson5910):

hint: add the equations to get 2x + 5y = -4 4x - 5y = 22 -------------- 8x+0y = 18 so 8x = 18 x = ???

jimthompson5910 (jim_thompson5910):

oops typo, I meant to say 6x = 18 not 8x = 18

OpenStudy (anonymous):

x = 3

jimthompson5910 (jim_thompson5910):

good, 6x = 18 turns into x = 3

OpenStudy (anonymous):

Now for y we just plug in 3 for x and find out from there?

jimthompson5910 (jim_thompson5910):

exactly, plug in x = 3 into any equation with x and y, then solve for y

OpenStudy (anonymous):

I found -2 = y. Am I right?

jimthompson5910 (jim_thompson5910):

y = -2 is correct

jimthompson5910 (jim_thompson5910):

nice work

OpenStudy (anonymous):

Thanks for your help!

jimthompson5910 (jim_thompson5910):

you're welcome

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