0.69x+21=1.39x

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Solution for 0.69x+21=1.39x equation: 



0.69x+21=1.39x

We move all terms to the left:

0.69x+21-(1.39x)=0

We add all the numbers together, and all the variables

0.69x-(+1.39x)+21=0

We get rid of parentheses

0.69x-1.39x+21=0

We add all the numbers together, and all the variables

-0.7x+21=0

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

-0.7x=-21

x=-21/-0.7

x=+30

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