Question

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Answer 1

solve for x first and then solve for y...

Answer 2

for the second equation x-y=7
add y to both sides and you'll have x = 7 +y
now plug that back into the first equation

Answer 3

7+y + 4y = -8

combine like terms

7+5y=-8

subtract 7 on both sides

5y=-8-7
5y=-15
y = -3

Answer 4

now plug -3 into the second equation

x-(-3) = 7
x +3=7
x = 4

Answer 5

Oh, you're tutoring others. *gives Usuki cookie*

Answer 6

ok

Answer 7

@wio do you know the cantor schroder - bernstein theorem?

Answer 8

Nope, never learned it.

Answer 9

I'm not a math major, that is why I always have to ask you definitions so I can learn it on the fly.

Answer 10

ah k. I 'll just try and go on a wing and a prayer