2(2y-1)-3(3y-5)=12,10y+5(y-1)=3(7-y)

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2(2y-1)-3(3y-5)=12,10y+5(y-1)=3(7-y)2(2y-1)-3(3y-5)=12,10y+5(y-1)=3(7-y)2(2y-1)-3(3y-5)=12,10y+5(y-1

2(2y-1)-3(3y-5)=12,10y+5(y-1)=3(7-y)
2(2y-1)-3(3y-5)=12,10y+5(y-1)=3(7-y)

2(2y-1)-3(3y-5)=12,10y+5(y-1)=3(7-y)
2(2y-1)-3(3y-5)=12,
4y-2-9y+15=12
5y=1
y=1/5
10y+5(y-1)=3(7-y)
10y+5y-5=21-3y
8y=16
y=2

4y-2(2y-1)-3(3y-5)=12
2-9y+15=12
13-5y =12
5y =-1
y=-1/5
10...

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4y-2(2y-1)-3(3y-5)=12
2-9y+15=12
13-5y =12
5y =-1
y=-1/5
10y+5(y-1)=3(7-y )
10y+5y-5 =21-3y
10y+5y+3y=21+5
18y=26
y=9/13

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