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Which ordered pair is the solution to the system of equations? 2x-y=-5 x+3y=22 A. (1, 7) B. (4, 9) C. (7, 19) D. (8, 21)
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@TheSavior
@TheSmartOne
A
how
check these yourself, 2(1)-7=-5 and 1+ 3(7) = 22
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ok hold on
wait so I do 2*1-7 and 1+3*7
yes
ok
and see if they match what it says it equals... if it doesnt it is incorrect.
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I got -5 and 28
how did you do the second one?
-5 is right, 28 is not
1+3*7
if you do 7*3 + 1 then its 22 but if you do it 1+3*7 then its 28
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no, do PEMDAS, always multiply first
therefore, 1+3*7= 1+21=22
I'm so dumb lol and PEMDAS was my favorite thing to do
could you help me with 3 more
@TheSavior
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