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Sagot :

INEQUATION

Bonjour,

Calculer:

3/7 + 120/63= 3/7+(120:3)/(63:3)= 3/7+(40/21)= (3x3+40)/21= 49/21

                    = (49:7)/(21:7)= 7/3

7/2-5/2+1/5= 2/2+1/5= 1+1/5= (1x5+1)/5= 6/5

5/2:(3/5-4/3)= 5/2: (3x3-4x5)/15= 5/2:(9-20)15= 5/2:(-11/15)=5/2x(-15/11)

                    = (-5x15)/(2x11)= -75/22

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