3=20+2x

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Solution for 3=20+2x equation: 



3=20+2x

We move all terms to the left:

3-(20+2x)=0

We add all the numbers together, and all the variables

-(2x+20)+3=0

We get rid of parentheses

-2x-20+3=0

We add all the numbers together, and all the variables

-2x-17=0

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

-2x=17

x=17/-2

x=-8+1/2

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