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repedee! multumesc! 12 punctee!

Repedee Multumesc 12 Punctee class=

Răspuns :

Rezolvarea:
a) 9x+3=10
9x=10-3
9x=7
x= 7/9 ( semnul ”/” insemna supra)

b) introducem intregii in fractie

5/2x-1/4=6
10x-1=24
10x=24+1
10x=25
x= 5/2