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all i know is you use substitution

add the two equations and post what you got.

what do you mean by add them

steps:
x-y=-5
-x+4y=10
despejas x
x=-5+y
5-y+4y=10
3y=5
y=5/3
ahora en x-y=-5
x-(5/3)=-5
x=-10/3

x-y = 5 -------> Equation 1
-x+4y = 10 ------------> Equation 2
Add equations 1 and 2

oh also if it helps im only in 8th grade

No shadow fiend. The problem is different. These answers were getting jumbled up, with another post

so -x=4y=5

meaning
(x-y) +(-x+4y) = -5 + 10

wow this is even more confusing now

what is confusing about this?

ok thx for the answers not confusing any more

do you understand that if
a = b
and c = d,
then a+c will be equal to b+d?

yeah

Rock it. Make sure you click `good answer' next to the answers that were helpful :)

alright can do

yeah

once I solve for y, all i need to do is substitute it in one of the equations and get x.