-4(5x-4)+5=-20x+21

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Solution for -4(5x-4)+5=-20x+21 equation: 



-4(5x-4)+5=-20x+21

We move all terms to the left:

-4(5x-4)+5-(-20x+21)=0

We multiply parentheses

-20x-(-20x+21)+16+5=0

We get rid of parentheses

-20x+20x-21+16+5=0

We add all the numbers together, and all the variables

=0

x=0/1

x=0

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