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Efecuati
3x+1=17-5 x


Răspuns :

3x+1=17-5x
trecem 5x in stanga si 1 in dreapta
3x+5x=17-1
8x=16
x=2
5x-3x+1=17
2x=17-1
2x=16
x=16:2
x=8