Sagot :
a)= [tex]\frac{1}{12} \\[/tex]
B)=[tex]\frac{3}{10}[/tex]
C)=[tex]\frac{3}{10}[/tex]
D)=[tex]\frac{120}{1}[/tex]
a) 3/70x35/18
= 3x35/70x18
= 105/1260
= 105x1/105x12
= 1/12
b) 27/28x14/45
= 27x14/28x45
= 378/1260
= 3x126/10x126
= 3/10
c) 42/18x27/140
= 42x27/18x140
= 1134/2520
= 9x126/20x126
= 9/20
d) 40/16x48
= 40x48/16x1
= 1920/16
= 120
Voilà ! Bonne journée ! :)
= 3x35/70x18
= 105/1260
= 105x1/105x12
= 1/12
b) 27/28x14/45
= 27x14/28x45
= 378/1260
= 3x126/10x126
= 3/10
c) 42/18x27/140
= 42x27/18x140
= 1134/2520
= 9x126/20x126
= 9/20
d) 40/16x48
= 40x48/16x1
= 1920/16
= 120
Voilà ! Bonne journée ! :)