(vi), y = 3x + 5, 3y = x + 7
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Step-by-step explanation:
y=3x+5
3y=x+7
3(3x+5)=x+7
9x+15=x+7
9x-x=7-15
8x=-8
x=-1
y=3x+5
y=3*-1+5
y=2
therefore x=-1,y=2
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