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w/4-1.4=6.4
We move all terms to the left:
w/4-1.4-(6.4)=0
We add all the numbers together, and all the variables
w/4-7.8=0
We multiply all the terms by the denominator
w-(7.8)*4=0
We add all the numbers together, and all the variables
w-31.2=0
We move all terms containing w to the left, all other terms to the right
w=31.2
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