Question

Aflati X,e N astfel incat x+2supra15=8supra10
Va rog urgent !!!!!
Dau coroana !!!!

Answer 1

se aplica o proprietate de la rapoarte: produsul mezilor = produsul extremelor

$\frac{x+2}{15} = \frac{8}{10} \\ \\ 10*(x+2)=8*15 \\ \\ 10x+20=120 \\ \\ 10x=120-20 \\ \\ x=100:10 \\ \\ x=10$

Answer 2

x+2supra15=8supra10=>

(x+2)*10=15*8
10x+20=120
10x=120-20
10x=100
x=100/10
x=10