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4.20/3.5=x
We move all terms to the left:
4.20/3.5-(x)=0
We add all the numbers together, and all the variables
-1x+4.20/3.5=0
We multiply all the terms by the denominator
-1x*3.5+4.20=0
We add all the numbers together, and all the variables
-1x*3.5+4.2=0
Wy multiply elements
-3.5x+4.2=0
We move all terms containing x to the left, all other terms to the right
-3.5x=-4.2
x=-4.2/-3.5
x=1+0.7/3.5
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