Question

va rog mult clasa 5​

Answer 1

Răspuns:

Explicație pas cu pas:

x+y+z+u=106

x+y-10=z+4

x+4=y

u-8=z

Rezolvare

x+y=z+4+10=z+14

u=z+8

acum inlocuim in prima formula

z+14+z+z+8=106

3z+22=106

3z=106-22=84

z=28

u=z+8=28+8=36

x+y=z+u+10=28+36+10=74

x+4=y

x=y-4

x+y=74

y-4+y=74

2y=74-4=70

y=70/2=35

x=y-4=35-4=31