Question

8x + 10y = 42.5
2x - y = 2.75
What's the value of x and y?

Answer 1

Explanation:

8x+10y=42.5...(1)

2x-y=2.75...(2)

Multiply (2) by 10 and add (1) then we get

8x+10y+10(2x-y)=42.5+10(2.75)=>28x=70 =>

x=2.5. Substitute x=>2.5 in (1) =>8(2.5)+10y=

42.5 =>10y=42.5-20=22.5 =>y=22.5/10 =>y=2.25. Hope it helps you.

Answer 2

Answer:

X=4 and Y =5.25 you can verify the value of x and y in the given equation by put these values