350+7x=840-3x

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Solution for 350+7x=840-3x equation: 



350+7x=840-3x

We move all terms to the left:

350+7x-(840-3x)=0

We add all the numbers together, and all the variables

7x-(-3x+840)+350=0

We get rid of parentheses

7x+3x-840+350=0

We add all the numbers together, and all the variables

10x-490=0

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

10x=490

x=490/10

x=49

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