Question

calcule: 3-[5/9+1/3:2/9-0,1]=?

Answer 1

3 - [5/9 + 1/3 : 2/9 - 0,1]
3 - [5/9 + 1/3 * 9/2 - 0.1]
3 - [5/9 + 9/6 - 1/10]
3 - [mmc = 90]
3 - [50/90 + 135/90 - 9/90]
3 - 176/90
270/90 - 176/90
94/90 (:2)
47/45

$\boxed{47/45}$

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