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Afltai x,eN,astfel in cat :

A)5suprex+2 =15supra9
B)x=3supre 6=4supre24
C)11supra22=22suprax-5
Va rog repede !!!!!!
Dau coroana !!!!


Răspuns :

15(x+2) = 5*9
15(x+2) = 45
x+2=45:15
x+2=3
x=3-2
x=1

24(x-3)=6*4
24(x-3)=24
x-3=24:24
x-3=1
x=1+3
x=4

11(x-5) = 22*22
x-5 = 22*22:11
x-5=44
x=44+5
x=49