7x+3=-21+x

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



7x+3=-21+x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

7x-x+21+3=0

We add all the numbers together, and all the variables

6x+24=0

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

6x=-24

x=-24/6

x=-4

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