1) 1.3*(-3.2)=-4.16

2)[tex]\frac{-4}{7} *(-2\frac{1}{3} )=\frac{-4}{7} *(\frac{-7}{3} )=\frac{4}{3} =1\frac{1}{3}[/tex]

3) [tex]-3\frac{4}{15} :(-5\frac{3}{5})=\frac{49}{15}:\frac{28}{5}=\frac{49}{15}*\frac{5}{28}=\frac{7}{12}= 0\frac{7}{12}[/tex]

4) -0.52:1.3=-0.4

Пошаговое объяснение:

-0,52 : 1,3 = -0,4

-3. 4/15 : (-5. 3/5) = -49/15 : (-28/5) = -49/15 * (-5/28) = -7/3 * (-1/4) = 7/12

1,3 * (-3,2) = -4,16

-4/7 * (-2, 1/3) = -4/7 * (-7/3) = 4/3 = 1. 1/3