A= 1/5 x -4/3 + 7/2
B= 4/5 : (-3/7) - 7/10                 / = fractions 
C= 13/7 + (-8/7) : (-4/5)             : = division 
D= 7/3 + 3/2 x -10/21
E= 5/8 + (-3/4) : (-9/16)
F= 6/5 - (-1/9) x (-3/4) 

Répondre :

1/5x-4/3+7/2
-4/15+7/2
-8/30+105/30
97/30

4/5 : (-3/7)-7/10
4/5x-7/3-7/10
-28/15-7/10
-56/30-21/30
-77/30

13/7+(-8/7):(-4/5)
13/7+(-8/7)x-5/4
13/7+40/28
52/28+40/28=92/28=23/7

7/3+3/2x-10/21
7/3+(-30/42)
108/42-30/42=78/42=13/7

5/8+(-3/4) : (-9/16)
5/8+(-3/4)x(-16/9)
5/8+48/36
45/72+96/72=141/72ou47/24

6/5-(-1/9)x(-3/4)
6/5-3/36
436/360-30/360
406/360

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