4x+3=7-21x

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Solution for 4x+3=7-21x equation: 



4x+3=7-21x

We move all terms to the left:

4x+3-(7-21x)=0

We add all the numbers together, and all the variables

4x-(-21x+7)+3=0

We get rid of parentheses

4x+21x-7+3=0

We add all the numbers together, and all the variables

25x-4=0

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

25x=4

x=4/25

x=4/25

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