x+x*0.4=30

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Solution for x+x*0.4=30 equation: 



x+x*0.4=30

We move all terms to the left:

x+x*0.4-(30)=0

Wy multiply elements

x+0.4x-30=0

We add all the numbers together, and all the variables

1.4x-30=0

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

1.4x=30

x=30/1.4

x=21+0.6/1.4

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