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y+y=4/5
We move all terms to the left:
y+y-(4/5)=0
We add all the numbers together, and all the variables
y+y-(+4/5)=0
We add all the numbers together, and all the variables
2y-(+4/5)=0
We get rid of parentheses
2y-4/5=0
We multiply all the terms by the denominator
2y*5-4=0
Wy multiply elements
10y-4=0
We move all terms containing y to the left, all other terms to the right
10y=4
y=4/10
y=2/5
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