Question 6298
8x+9y=1030......[1]
1x+1y=120.......[2]
<P>
x=(120-y)
8x+9y=1030
8(120-y)+9y=1030
960-8y+9y=1030
960+y=1030
y=1030-960
y=70
<P>
x=(120-70)=50
<P>
Your answer of y=70 seems to be correct.
<b>x=50,y=70</b>
<br>hope this helps,good luck