Bjr merci de m'aider répondre a faire cest calcule svp en expliquant les étapes mrc A=5/6 + -1/3 B=7/9 - 1/-27 C=-8/5 + 23/50 D= 45/15 - 7/3 E= 8/11 + 2 F= 8/-9

5/6+(-1/3)

=(5-2)/6

=3/6

=(3÷3)/(6÷3)

=1/2

7/9-1/-27

=7/9+1/27

=(21+1)/27

=22/27

-8/5+23/50

=(-80+23)/50

=-57/50

45/15-7/3

=((45÷5)/(15÷5))-7/3

=9/3-7/3

=2/3

8/11+2

=(8+22)/11

=30/11

8/-91+(-1/7)

=(-8-13)/91

=-21/91

=(-21÷7)/(91÷7)

=-3/13

5/2-(-45/4)+2/8

=5/2+45/4+2/8

=(20+90+2)/8

=112/8

=(112÷8)/(8÷8)

=14

4-5/-48+(-8/7)

=4+5/48-8/7

=(1344+35-384)/336

=995/336

Réponse :

Explications étape par étape :

bonjour

A=5/6 + -1/3

A = 5/6 - 2/6 = 3/6 =1/2

B=7/9 - 1/-27 = 21/27 + 1/27 = 21/27= (3×7)/(3×9)=7/9

C= - 8/5 + 23/50 = - 80/50 + 23 /50 = - 57/50

D= 45/15 - 7/3= 45/15 -35/15 = 10/15 =(2×5)/(3×5) = 2/3

E= 8/11 + 2 = 8/11 + 22/11 = 30/11

F= 8/-91 + -1/7 = -8/91 - 1/7 = -8/91 - 13/91 = -21/91= (-3 × 7)/(7×13) =(-3/13)

G= 5/2- -45/4 +2/8 = 5/2 + 45/4 + 2/8

G = 20/8+ 90/8 + 2/8 = 112/8  = 14

H= 4- 5/-49 + (-8/7)= 4 +5/49- 8/7

H = 196/49 + 5/49 - 56/49

H = 145/49