Sagot :
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