Answer:
x=1
Step-by-step explanation:
3x+y
x=? y=-3
3x+y=0
3x=-y
3x=-(-3)
3x=3
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Answer:
x=1
Step-by-step explanation:
3x+y
x=? y=-3
3x+y=0
3x=-y
3x=-(-3)
3x=3
x=1