Question

Somebody please help me, i can do all the other ones except this one
x+3y=8
2x-y=2

Answer 1

@Hero

Answer 2

substitution or elimination ? or does it matter ?

Answer 3

i think substitution
@kelliegirl33

Answer 4

x + 3y = 8
x = -3y + 8

now sub -3y + 8 in for x back into the other equation

2x - y = 2
2(-3y + 8) - y = 2
-6y + 16 - y = 2
-7y + 16 = 2
-7y = 2 - 16
-7y = -14
y = -14/-7
y = 2

now sub 2 in for y in either equation to find x
x + 3y = 8
x + 3(2) = 8
x + 6 = 8
x = 8 - 6
x = 2

now we check..
2x - y = 2
2(2) - 2 = 2
4 - 2 = 2
2 = 2 (correct)

so x = 2 and y = 2
questions ?

Answer 5

Yes why'd you change it from x+3y=8 to x=-3y+8
@kelliegirl33