Sagot :
Réponse :
Explications étape par étape :
L=-7/5÷(-1/6)
L=7/5÷1/6
L=7/5*6
L=42/5
M=7/10÷(-29/12)
M=7/10*12/29
M=7/5*6/29
M=42/145
Bonjour,
-7/5 ÷ (2/9 - 7/18) = -7/5 ÷ (4/18 - 7/18)
= -7/5 ÷ (-3/18)
= 7/5 × 18/3
= 7/5 × 6
= 42/5
(4/5 - 3/2) ÷ (-9/4 -1/6) = (8/10 - 15/10) ÷ (-27/12 - 2/12)
= (-7/10) ÷ (-29/12)
= 7/10 × 12/29
= (7×12)/(10×29)
= (7×2×6)/(5×2×29)
= (7×6)/(5×29)
= 42/145