Question

How we get x=3 from subtracting x-y=-2 from 2x-y=1

Answer 1

Step-by-step explanation:

explanation attached

hope it helps u

Answer 2

Answer:

x=3,

by elimination method:

X-Y=-2

2X-Y=1

by solving these equations,

we get

-X=-3

by cancelling -,we get X=3

Hence proved/.