Question

Pls help quick.......

Answer 1

x=1

y=3

Explanation:

21x+7y=42

Dividing by 7 gets us 3x+y=6

-5x+5y=10

Dividing by 5 gets us y-x=2

Subtract the first one from the second one

y-x-3x-y=2-6

-4x=-4

x=1

Substitute x=1 back in

y-1=2

y=3

(1,3)