Réponses

Meilleure réponse !
2013-10-09T19:43:08+02:00
A) 11 = -2 + x
11+2==
x=13

b) -4 = x + 12
-4-12=x
x= -16

c) x - 4/3 = 1
x= 1+4/3
x= 3/3+4/3
x=7/3

d) 3/4 + x = 5/4
x= 5/4-3/4
x=2/4

e) 7/2 = x - 1
7/2+1=x
7/2+2/2=x
x=9/2

f) - 2/5 = 4 - x
-2/5-4=x
-2/5-20/5=x
-22/5=x