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aidez moi svp pour cette exercice​

Aidez Moi Svp Pour Cette Exercice class=

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YASSMINE8812

a. -5/14 - 3/7

= -5/14 - 3×2/7×2

= -5/14 - 6/14

= -5-6/14

= -11/14

b. 2/9 - 5/27

= 2×3/9×3 - 5/27

= 6/27 - 5/27

= 6-5/27

= -1/27

c. -3/20 - 2/5

= -3/20 - 2×4/5×4

= -3/20 - 8 /20

= -3-8/20

= -11/20