Question

Rezolvati in Q+ ecuatia 2/3(1+3-7x/2)=x

Answer 1

2/3(1+3-7x/2)=x
Rezolvati in Q, adica numere rationale (fractii). Gandeste-te la ratii(portii, felii dintr-un intreg)

1. desfacem paranteza:
2/3+2*3/3-7x*2/2=x

2. simplificam
2/3+2-7x/3=x

3.aducem la acelasi numitor
(2+6-7x)/3=x

4.calcule (a/b=c/d rezulta a*d=b*c)
2+6-7x=3x
8=10x
x=8/10
x=4/5

bafta