4-(5-x)+3x=20

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Solution for 4-(5-x)+3x=20 equation: 



4-(5-x)+3x=20

We move all terms to the left:

4-(5-x)+3x-(20)=0

We add all the numbers together, and all the variables

-(-1x+5)+3x+4-20=0

We add all the numbers together, and all the variables

3x-(-1x+5)-16=0

We get rid of parentheses

3x+1x-5-16=0

We add all the numbers together, and all the variables

4x-21=0

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

4x=21

x=21/4

x=5+1/4

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