30x-3.2*1.5=4.2

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Solution for 30x-3.2*1.5=4.2 equation: 



30x-3.2*1.5=4.2

We move all terms to the left:

30x-3.2*1.5-(4.2)=0

We add all the numbers together, and all the variables

30x-9=0

We move all terms containing x to the left, all other terms to the right

30x=9

x=9/30

x=3/10

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