Question

4. Determinati numerele x, y si z direct proportionale cu numerele 3; 4 şi 6, stiind ca:
a) z-y +x10;
b)x+y-z=4;
c) y + z-x-21.​

Answer 1

Răspuns:

a)z-y+x=10

x/3=y/4=6/z=10

6k-4k+3k=10

5k=10

k=10÷5

k=2

x=3 * 2=6

y=4 * 2=8

z=6 * 2=12