Question

1) -72:(-90); 2) -45:54; 3) -63:(-9);

Answer 1

Відповідь:

Покрокове пояснення:

$\frac{-72}{-90}=\frac{8}{10}=\frac{4}{5} =0,8$

$\frac{-45}{54}=-\frac{5}{6}$

-63:(-9)=7

Answer 2

/ — обозначение дроби

1) -72:(-90)=4/5
2) -45:54=-5/6
3) -63:(-9)=7

Answer 3

It seems like you're providing three mathematical expressions, but they are not clear. If you're asking for the results of these expressions, here they are:

1. -72 ÷ (-90) = 0.8
2. -45 ÷ 54 ≈ -0.8333 (rounded to 4 decimal places)
3. -63 ÷ (-9) = 7

If you meant something different, please provide more context or clarify your question, and I'll be happy to help further!