Question

Use the following systems of equations to answer the questions.



`x=y+10`



`2x+4y=38`



What is the value of x – y?

Answer 1

X=y+10
2(y+10)+4y=38
2y+20+4y=38
2y+4y=38-20
6y=18
Y=18/6
Y=3

X-10=y
2x+4(X-10)=38
2x+4x-40=38
6x=38+40
6x=78
X=78/6
X=13

X-y
=13-3
=10