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Sagot :

MAHAM

Réponse :

bonjour

Explications étape par étape

P=-9/7 × -28/3 ÷6/15

P=-9/7×-28/3 ×15/6

P= [tex]\frac{-9(-28)(15)}{7*3*6} = \frac{3780}{126} =30[/tex]

R=-3/25 + -24/15 ÷ 21/-35

R=-6/75 - 120/75  x -35/21

R=-126/75×-35/21

R=4410/1575

R=14/5

S = -2/3 × 6/8 -3/4 ÷ 1/-2

S = -12/24 -3/4 × -2/1

S = -12/24  +6/8

S=1/4

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