4) (a,b) d.p (6,4)
a+b=153400
[tex] \frac{a}{6} = \frac{b}{4}=K[/tex]
a=6K
b=4K
6K+4K=153400
10K=153400
K=153400:10
K=15340
a=15340x6
a=92040
b=15340x4
b=61360
5) [tex](a;b) i.p. ( \frac{1}{3}; \frac{1}{6} )[/tex]
a+b=90
a supra1 supra 3=b supra 1 supra 6=K
[tex]a= \frac{K}{3} ;b= \frac{K}{6} [/tex]
[tex] \frac{K}{3} + \frac{K}{6} =90[/tex] se amplifica prima fractie cu 6 si a doua cu 3
[tex] \frac{6K+3K}{18}=90
[/tex]
[tex] \frac{9K}{18} =90[/tex]
9K=90x18
9K=1620
K=1620:9
K=180
a=180:3
a=60
b=180:6
b=30
