👤

AJJUUUUUUTTOOOOORRRRRRR

AJJUUUUUUTTOOOOORRRRRRR class=

Răspuns :

x=nr. total de muncitori
2/7•x+(x-2/7•x)•3/5+12=x
2/7•x+5/7•x•3/5+12=x
2/7•x+3/7•x+12=x
5/7•x+12=x
12=x-5/7•x
12=7/7•x-5/7•x
12=2/7•x
x=42 muncitori
2/7•42=12 electricieni
(42-12)•3/5=30•3/5=18 mecanici