Question

Solve this system of equations using the addition method.
x-y=6
-3y=x+22

Answer 1

ik this aint 2pac

Answer 2

thats a fail

Answer 3

\[x-y=6 and -x-3y=22\]

Answer 4

if you add them you get: \[x-x-y-3y=28\]

Answer 5

x's are cancelled out and you get: \[-4y=28 and y=\frac{ 28 }{ -4 }=-7\]

Answer 6

and x=-1

Answer 7

-3y = x + 22 (change this to match the other equation)
-x - 3y = 22
x - y = 6
--------------add
0 - 4y = 28
-4y = 28
y = - 28/4 = - 7
now sub -7 in for y in either of the equations
x - y = 6
x - (-7) = 6
x + 7 = 6
x = 6 - 7
x = - 1
now check it...
-3y = x + 22
-3(-7) = -1 + 22
21 = 21 (correct)
ANSWER : x = -1, y = -7 or (-1,-7)