👤

folosind cele trei metode, rezolvati
ecuatiile :
a) ×+3=7
b) ×-4=9
c) 2×+4=10



Răspuns :

a) x+3=7=>x=7-3=>x=4

b) x-4=9=>x=9+4=>x=13

c) 2x=10-4=>2x=6=>x=6:2=>x=3