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Acest ex va rog!
Ofer coroana


Acest Ex Va Rog Ofer Coroana class=

Răspuns :

a)

x+1/5=4/2


2x+2=20


2x=18


x=9


b)

3//5=7x-2/20


60=35x-10


70=35x


x=2


c)

5x-2/2x+3=8/7


35x-14=16x+24


35x-16x=24+14


19x=38


x=2