7.8x-3.4x-1.6x=4.2

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Solution for 7.8x-3.4x-1.6x=4.2 equation: 



7.8x-3.4x-1.6x=4.2

We move all terms to the left:

7.8x-3.4x-1.6x-(4.2)=0

We add all the numbers together, and all the variables

2.8x-4.2=0

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

2.8x=4.2

x=4.2/2.8

x=1+1/2

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