0.3*8+0.7*x=8.2

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Solution for 0.3*8+0.7*x=8.2 equation: 



0.3*8+0.7x=8.2

We move all terms to the left:

0.3*8+0.7x-(8.2)=0

We add all the numbers together, and all the variables

0.7x-5.8=0

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

0.7x=5.8

x=5.8/0.7

x=8+0.2/0.7

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