aider moi svp maths niv 6ème​

Bonsoir,

a. 3 x 2/7 x 4/3 x 7

= 3 x 4/3 x 2/7 x 7

= 12/3 x 14/7

= 4 x 2

= 8

b. 5/6 x 3/5 x 12 x 15

= 5/6 x 12 x 3/5 x 15

= 60/6 x 45/5

= 10 x 9

= 90

Hello!

a) A = 3×(2/7)×(4/3)×7

A = 3×(4/3)×7×(2/7)

A = 4 × 2

A = 8

b) B = (5/6)×(3/5)×12×15

B = (15/30)×12×15

B = (15/15×2)×12×15

B = (1/2)×12×15

B = (12/2) × 15 = 6×15

B = 90

Bonne soirée !