3x+10=400-10x

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Solution for 3x+10=400-10x equation:



3x+10=400-10x
We move all terms to the left:
3x+10-(400-10x)=0
We add all the numbers together, and all the variables
3x-(-10x+400)+10=0
We get rid of parentheses
3x+10x-400+10=0
We add all the numbers together, and all the variables
13x-390=0
We move all terms containing x to the left, all other terms to the right
13x=390
x=390/13
x=30

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