(2.1-x)3=-12

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Solution for (2.1-x)3=-12 equation: 



(2.1-x)3=-12

We move all terms to the left:

(2.1-x)3-(-12)=0

We add all the numbers together, and all the variables

(-1x+2.1)3-(-12)=0

We add all the numbers together, and all the variables

(-1x+2.1)3+12=0

We multiply parentheses

-3x+6.3+12=0

We add all the numbers together, and all the variables

-3x+18.3=0

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

-3x=-18.3

x=-18.3/-3

x=6+0.3/3

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