3+4x=-21-20x

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Solution for 3+4x=-21-20x equation: 



3+4x=-21-20x

We move all terms to the left:

3+4x-(-21-20x)=0

We add all the numbers together, and all the variables

4x-(-20x-21)+3=0

We get rid of parentheses

4x+20x+21+3=0

We add all the numbers together, and all the variables

24x+24=0

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

24x=-24

x=-24/24

x=-1

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