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  • Utilizator Brainly
2014-04-11T20:22:41+03:00
D=I*c+r                              
3a:b=2 rest 5
3a=2b+5
2b/b+5/b=2 rest 5
2+(5/b)=2 rest 5
5/b=(c+r)/2
 \frac{5}{b}=  \frac{c+r}{y2}

\frac{5}{b}= \frac{7}{2}

b=
 \frac{5*2}{7} = \frac{10}{7}

b=10/7

3a=2b+5
3a=20/7+5
21a=20+35
21a=55
a=55/21


daca faci verificarea 

3a=2b+5
3*(55/21)=2*(10/7)+5 =>
55/7=20/7+5   aducem la acelasi numitor
55/7=20/7+7*5
55=20+35