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1. 1/3 (y-7)= y+1
2. 1/3(2y+1)=1/3(5y-1)
1. 1/3 (y-7)= y+1
2. 1/3(2y+1)=1/3(5y-1)
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1/3 (y-7)= y+1
y-7 = 3(y+1)
y-7 = 3y + 3
-2y = 10
y = 10/-2 = -5
2.
1/3(2y+1)=1/3(5y-1)
2y + 1 = 5y -1
2 = 3y
y = 2/3