Question

am nevoie de ajutor urgent!!!! ​

Answer 1

Răspuns:

Explicație pas cu pas:

1.

x = 3y/6 = y/2

y = 2z

x = y/2 = 2z/2 = z

x + 2y + z = 18

z + 4z + z = 18

6z = 18

z = 18 : 6 = 3

x = z = 3

y = 2z = 6

___________________

2.

x = 0,3*10y/4 = 3y/4

y = 12z/5

x = 3/4 * 12z/5 = 9z/5

x + y + 3z = 72

9z/5 + 12z/5 + 3z = 72

9z/5 + 12z/5 + 15z/5 = 72

36z/5 = 72

z = 72*5/36 = 10

x = 9*10/5 = 18

y = 12*10/5 = 24