Sagot :
(3/2 + 3/5)x(5/4 - 4/3)
=(15/10+6/10)x(15/12-16/12)
=21/10 x (-1/12)
=-7/10 x 1/4
=-7/40
=(15/10+6/10)x(15/12-16/12)
=21/10 x (-1/12)
=-7/10 x 1/4
=-7/40
(3/2+3/5)x(5/4-4/3)
(15/10+6/10)x(15/12-16/12)
21/10x(-1/12)
-21/120 ou -7/40
(15/10+6/10)x(15/12-16/12)
21/10x(-1/12)
-21/120 ou -7/40