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4y-1.9=6.9
We move all terms to the left:
4y-1.9-(6.9)=0
We add all the numbers together, and all the variables
4y-8.8=0
We move all terms containing y to the left, all other terms to the right
4y=8.8
y=8.8/4
y=2+0.8/4
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