Question

por favor! !
calcule as divisões :
a) ( +1/3 ) : ( -2/5)
b) (-4/7):(1/2
b)-6: ( +7/3)
d)(-5/2):3

Answer 1

Por favor! !calcule as divisões :

a) ( +1/3 ) : ( -2/5)
   1           2
------ : (- -------)   ATENÇÃO na DIVISão DE FRAÇÃO  COpia o 1º 
  3            5        O 2º MULTIPLICANDO

    1              5             1X5             5
----------X (- -----) =  - -------- =  -  ---------
    3              2            3x2               6

b) (-4/7):(1/2)
     4          1                4        2              4x2               8
- ------- : -------   =   - -------x--------- = -  --------- =   - ------
     7          2                7        1              7x1                7

b)-6: ( +7/3)
- 6 = 6/1

      6          7                6        3                 6x3           18
 - ------- : -------- =  -  --------x-------- =  -  ------- =   - --------
      1          3                 1        7              1x 7             7

d)(-5/2): 3
3 = 3/1
    5           3                  5       1                5x1              5
- ------- : -------- =  -    ------x --------- =  -  --------- = -  --------
    2           1                  2       3                2x3              6