21(4x)=-20

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



21(4x)=-20

We move all terms to the left:

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

We add all the numbers together, and all the variables

214x+20=0

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

214x=-20

x=-20/214

x=-10/107

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