x*0.8=30

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Solution for x*0.8=30 equation: 



x*0.8=30

We move all terms to the left:

x*0.8-(30)=0

Wy multiply elements

0.8x-30=0

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

0.8x=30

x=30/0.8

x=37+0.4/0.8

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