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Ex 1
Rezolvati in multimea Q ecuatia


Ex 1Rezolvati In Multimea Q Ecuatia class=

Răspuns :

D)1/5X-1,3=1
1/5X=1+1,3
1/5X=2,3
X=23/10:1/5
X=23/10x5/1
X=23/2
X=11,5

B)Xx(-3/4)=18
X=18/1:(-3/4)
X=-24

C)1-1/5X=0,5
1/5X=1-0,5
1/5X=0,5
X=5/10:1/5
X=5/2