Question

Ec. 1) x + y = 4
Ec. 2) x + 2y = 6

Answer 1

x+2y=6

-1(x+2y)=1x6

-x-2y=-1x6

-x-2y=-6

x+y-x-2y=4-6

y-2y=4-6

-y=4-6

-y=2

-1x(-4)=-1x(-2)

y=-1x(-2)

y=2

x+2=4

x=4-2

x=2

(x,y)=(2,2)

espero q te sirva