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[tex] - 2.75 - \frac{15}{10} [/tex]
[tex]( - \frac{4}{9} ) \div ( - \frac{2}{3} )[/tex]
[tex]0.58(3) \div ( \frac{7}{9} )[/tex]
[tex]1 \div ( - 3 \ \frac{1}{7} )[/tex]
[tex]( - 4 \frac{1}{16} ) \div \frac{65}{8} [/tex]
[tex] \frac{7}{12} - \frac{3}{20}) - \frac{5}{24} \ 0.1) \frac{6}{13} [/tex]


Răspuns :

Răspuns:

Explicație pas cu pas:

-2,75 - 15/10 =

-275/100 - 15/10 =

-55/20 - 3/2 =

-11/4 - 3/2 =

-11/4 - 6/4 = -17/4

(-4/9) : (-2/3) =

(-4/9) × (-3/2) =

(-2/3) × (-1/1) = 2/3

0,58(3) : 7/9 =

(583 - 58)/900 × 9/7 =

525/900 × 9/7 =

105/180 × 9/7 =

21/36 × 9/7 =

3/4 × 1/1 = 3/4

1 : (-3 1/7) =

1 : ( -22/7 ) =

1 × (-7/22) = -7/22

( -4 1/16 ) : 65/8 =

(-65/16) × 8/65 =

(-1/2) × 1/1 = -1/2

- 2.75 - 1.5 = - 4.25

- 4/9 : - 2/3 = - 4/9 x - 3/2 = 2/3

0.58(3) : 7/9 = 525/900 x 9/7 = 75/100 = 3/4

1 : - 3 1/7 =   1 x - 7/22 = - 7/22

- 4 1/16 : 65/8 = - 65/16 x 8/65 = - 1/2

ultimul ex e neinteligibil