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Sagot :

NAG

Réponse :

A=-[tex]\frac{33}{27}[/tex]+[tex]\frac{6}{4}[/tex]+(-[tex]\frac{21}{42}[/tex])

33/27 (on oublie les virgules)

33:3=11

27:3=7

11/7

6/4

6:2=3

4:2=2

3/2

21/42

21:21=1

42:21=2

1/2

A=-11/7+3/2+(-1/2)

=-11/7+3/2-1/2

=-22/14+21/14-7/14

=-22+21-7

=-1-7

=-8

je crois que c bon!!

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