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0.75x+x=4.20
We move all terms to the left:
0.75x+x-(4.20)=0
We add all the numbers together, and all the variables
0.75x+x-(4.2)=0
We add all the numbers together, and all the variables
1.75x-4.2=0
We move all terms containing x to the left, all other terms to the right
1.75x=4.2
x=4.2/1.75
x=2+0.7/1.75
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