Answer:
x=3, y=1. (3, 1).
Step-by-step explanation:
x+3y=6
2x-7y=-1
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x=6-3y
2(6-3y)-7y=-1
12-6y-7y=-1
12-13y=-1
13y=12-(-1)
13y=12+1
13y=13
y=13/13
y=1
x+3(1)=6
x+3=6
x=6-3
x=3
