Bonjour à toi aussi !!
Calculer les expressions :
3/4- 1/3+5/12
= (3 x 3) / (4 x 3) - (1 x 4) / (3 x 4) + 5/12
= 9/12 - 4/12 + 5/12
= 14/12 - 4/12
= 10/12
= (2 x 5) / (2 x 6)
= 5/6
(-1/3)×15×(-4/5)
= -15/3 x (- 4/5)
= 60/12
= (12 x 5) / (12 x 1)
= 5
(1/3-1/6)÷4/5
= [(1 x 2) / (3 x 2) - 1/6)] : 4/5
= (2/6 - 1/6) : 4/5
= 1/6 x 5/4
= 5/24
-3/7+5×8/7
= - 3/7 + 40/7
= 37/7
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Bonjour à toi aussi !!
Calculer les expressions :
3/4- 1/3+5/12
= (3 x 3) / (4 x 3) - (1 x 4) / (3 x 4) + 5/12
= 9/12 - 4/12 + 5/12
= 14/12 - 4/12
= 10/12
= (2 x 5) / (2 x 6)
= 5/6
(-1/3)×15×(-4/5)
= -15/3 x (- 4/5)
= 60/12
= (12 x 5) / (12 x 1)
= 5
(1/3-1/6)÷4/5
= [(1 x 2) / (3 x 2) - 1/6)] : 4/5
= (2/6 - 1/6) : 4/5
= 1/6 x 5/4
= 5/24
-3/7+5×8/7
= - 3/7 + 40/7
= 37/7