Solve X+Y= 1 X-Y= 7

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Solve X+Y= 1 X-Y= 7

Mathematics
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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there has to be like one
of the answers
to the variables

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Other answers:

is that the whole question ???
Its a simultaenous equation do you have any ideas?
yes thats the whole question the + equation is on top of the - equation
oh i hate question like this
I don't have a clue it all looks foriegn to me. I looked through my notes and I see nothing similar to this problem.
yah i've learned some really tough things and i have never done something like this
Start by\[X=1-Y\] Plug that into the second eqn
ok but htne there aren't any values for the the other equations do I'm suiming it has to be a negative number. someone told me for a similar problem with one negative answer and one positive answer I could add both equations and then muliplty the result and substitute it for either varible to find the other. it worked for that problem but not for this one wwhere both answers are positive
then*
well if it is like how @incomplte said then i have the answer but if it is like how you are saying then i dont know
ok ill try it his way but im still coming up blank
ok for the second one it is 1 - (-7)
AND YOU WOULD GET ????
8
Eqn 2 becomes\[(1-Y)-Y = 7\] So1-2Y=7 -2Y=6 Y=-3
correct @bleumom22 see now you get for #2
Can you solve for X now?
just substitiue for y and then ill get the x variable?
Good. Let me know what you get for X
ok x=4?
Yes.
good job
im sorry can you tell me the first step to solving this.
Glad to help :)
I have two exams next week and need to remember this.
Just start by Solving for X So from X+Y=1, say X=1-Y then plug that into the second equation.
oooh. ok and then just input the answer for one of the variables then divide the varible by its self and the answer by its self to get the variable's value?
as one of the varibles* to reverse calculate?
Yes. If you have any more questions just @ my username. Ill get a notification and i can help later
and i will try to help you if you need it ok
ok thank you to @incomplte and @ashlynn143
your welcome i gtg for like 15 min

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