(70+30)xx=400+30x

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Solution for (70+30)xx=400+30x equation: 



(70+30)xx=400+30x

We move all terms to the left:

(70+30)xx-(400+30x)=0

We add all the numbers together, and all the variables

100xx-(30x+400)=0

We get rid of parentheses

100xx-30x-400=0

We add all the numbers together, and all the variables

-30x+100xx-400=0

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

-30x+100xx=400

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