Question

if x+y=10 and x-y=12 then find x and y​

Answer 1

Answer:

y=11 &x=-1

Step-by-step explanation:

by elimination method,

subtracting equation 2 from 1, we get

x + y =10

x - y =12

(-) (-) (-)

_______

2y=22

hence ,y=11

again ,in eq 1,

x=10-11=-1 .

Answer 2

Step-by-step explanation:

x=12,y=-2