3+16x=20x-21

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Solution for 3+16x=20x-21 equation: 



3+16x=20x-21

We move all terms to the left:

3+16x-(20x-21)=0

We get rid of parentheses

16x-20x+21+3=0

We add all the numbers together, and all the variables

-4x+24=0

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

-4x=-24

x=-24/-4

x=+6

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