Answer:
-987889880538
Step-by-step explanation:
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−987889880538
x=1, y=4
x+y=5 - (1)
y=3x + 1 (2)
Sub (2) into (1)
x + (3x +1)=5
4x=5-1
x=4 ÷4
=1
Sub x=1 into (2)
y=3(1)+1
= 4
It's (C) But if you do it like this you get 13/6
