svp g besoin d'aide en maths et il faut simplifier pour: 3-2/3:4/3x7 3-2/3:4/3x7 -3/4+1/2:2/5-5/2

Bonjour,

Simplifier :

3-2/3:4/3x7

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

= 3 - 6/12 x 7

= 3 - 42/12

= 3 - 3,5

= - 0,5

-3/4+1/2:2/5-5/2

= - 3/4 + 1/2 x 5/2 - 5/2

= - 3/4 + 5/4 - 5/2

= - 3/4 + 5/4 - 10/4

= - 8/4

= - 2.