Calculer et simplifier A =2/5 -3/10+7/2
B=9/4- 2
C=23/12 (4/3 + 5/12)


Sagot :

Réponse:

A=2/5_(3/10+7/2)=3+35 all over 10=38/10

38/10-2/5=38-4 all over 10= 34/10=3whole number4/10

B=9/4-2= 9-8 all over 4 = 1/4