15(20=x)=420

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Solution for 15(20=x)=420 equation: 



15(20=x)=420

We move all terms to the left:

15(20-(x))=0

We add all the numbers together, and all the variables

15(-1x+20)=0

We multiply parentheses

-15x+300=0

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

-15x=-300

x=-300/-15

x=+20

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