x(1.5)=81

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Solution for x(1.5)=81 equation: 



x(1.5)=81

We move all terms to the left:

x(1.5)-(81)=0

We multiply parentheses

1.5x-81=0

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

1.5x=81

x=81/1.5

x=54

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