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4*x-3.125=7
We move all terms to the left:
4*x-3.125-(7)=0
We add all the numbers together, and all the variables
4x-10.125=0
We move all terms containing x to the left, all other terms to the right
4x=10.125
x=10.125/4
x=2+1/1.8823529411765
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