4.2(15+5)=-20x-21-x

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Solution for 4.2(15+5)=-20x-21-x equation: 



4.2(15+5)=-20x-21-x

We move all terms to the left:

4.2(15+5)-(-20x-21-x)=0

We add all the numbers together, and all the variables

-(-21x-21)+4.220=0

We add all the numbers together, and all the variables

-(-21x-21)+4.22=0

We get rid of parentheses

21x+21+4.22=0

We add all the numbers together, and all the variables

21x+25.22=0

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

21x=-25.22

x=-25.22/21

x=-1+3.4590163934426/17.213114754098

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