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-18=0

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

-4x=18

x=18/-4

x=-4+1/2

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