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7y-5y-10=28.90
We move all terms to the left:
7y-5y-10-(28.90)=0
We add all the numbers together, and all the variables
7y-5y-10-(28.9)=0
We add all the numbers together, and all the variables
2y-38.9=0
We move all terms containing y to the left, all other terms to the right
2y=38.9
y=38.9/2
y=19+0.9/2
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