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a fost răspuns

Rezolvati d )7x-25<3

Răspuns :

KittyWoman50
x=1
7-25<3 (FALS)
x=2
14-25<3 (FALS)
x=3
21-25<3(FALS)
x=4
28-25<3
3<3(ADEVARAT)
x=5
35-25<3
10<3 (FALS)
CEA CORECTA ESTE : X=4.
Asta este ecuatia: 7x-25<3 /+25 7x<28 /:7 x<28:7 x<4 x€ (4)

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