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Mathematics 7 Online
OpenStudy (anonymous):

Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 4x – 8y = 48 11x + 3y = -105.5

OpenStudy (anonymous):

is the answer x=13 and y=0.5

OpenStudy (anonymous):

That is incorrect. It fits perfectly with the first question, but not the second. Recheck your work!

OpenStudy (anonymous):

so x=13 is right

OpenStudy (anonymous):

|dw:1348278858538:dw|You can't tell for sure, unless I do the whole thing. Let me do that. Lol. Is that what your work looks like? So far...?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

|dw:1348279056096:dw|

OpenStudy (anonymous):

ok thats what i didn't know when to add and subtract.

OpenStudy (anonymous):

Well you need to cross out either the x or the y. So you just do it according to that. Get it or do you want me to explain?

OpenStudy (anonymous):

i think i got it now is it 9.5

OpenStudy (anonymous):

-9.5! Negatives make a BIG difference!

OpenStudy (anonymous):

ok thanks

OpenStudy (anonymous):

np

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