-0.51x+0.31x=4.2

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Solution for -0.51x+0.31x=4.2 equation: 



-0.51x+0.31x=4.2

We move all terms to the left:

-0.51x+0.31x-(4.2)=0

We add all the numbers together, and all the variables

-0.2x-4.2=0

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

-0.2x=4.2

x=4.2/-0.2

x=-21

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