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8y+2.5=10.4
We move all terms to the left:
8y+2.5-(10.4)=0
We add all the numbers together, and all the variables
8y-7.9=0
We move all terms containing y to the left, all other terms to the right
8y=7.9
y=7.9/8
y=4.1578947368421/4.2105263157895
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