👤

determina nr.

a+b+c=2140
a/b=2
c/b=7


NUMAI CINE STIEEEEEEEEEEEEEEEEEE


Răspuns :

[tex] \frac{a}{b} =2 ----> a= 2b[/tex]
[tex] \frac{c}{b} =7 ---> c=7b[/tex]
a+b+c=2140
2b+b+7b=2140
10b=2140
b=214
a=2x214=428
c=7x214=1498
[tex] \frac{a}{b}=2[/tex]⇒a=2b
[tex] \frac{c}{b}=7 [/tex]⇒c=7b
a+b+c=2140
2b+b+7b=2140
10b=2140
b=214
a=2·214
a=428
c=7·214
c=1498