Answer:
y = x+5
x+2y=16
x+2(x+5)=16
x+2x+10=16
3x+10=16
16. 3x + 10 = 16
-10 -10
3x=6
Divide 3 from both sides
x=2
y=x+5
y=2+5
y=7
17. (2,7)
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