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Yosra062
@Yosra062
May 2019
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Bonsoir quelqu’un pourrait m’aider sur 3 exercice s’il vous plaît ?
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batman1234
Exercices 3:
a-)1/2-5/6=1/9 . c-) 7/12-1/4=1/3 . d-) -5/6+-5/7=-65/42
e-)-6/10+5/11=-8/55
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yosra062
Oui tkt
ramzi13
Bonsoir :
1) 3×7×5=105
1/3=(1×35)/(3×35) =35/105 ; 1/7=(1×15)/(7×15) =15/105 ; 1/5=(1×21/(5×21)=21/105.
1/3+1/7+1/5=35/105+15/105+21/105 =71/105
2) le reste : 105/105 - 71/105 = 34/105
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yosra062
Mercii mdr mais je comprend pas trop enft
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a-)1/2-5/6=1/9 . c-) 7/12-1/4=1/3 . d-) -5/6+-5/7=-65/42
e-)-6/10+5/11=-8/55
1) 3×7×5=105
1/3=(1×35)/(3×35) =35/105 ; 1/7=(1×15)/(7×15) =15/105 ; 1/5=(1×21/(5×21)=21/105.
1/3+1/7+1/5=35/105+15/105+21/105 =71/105
2) le reste : 105/105 - 71/105 = 34/105