Question

Aflati numerele naturale x si y Stiind ca sunt Indeplinite Simultan Conditiile: A)x+y=120 B)x=3Inmultit cU Y

Answer 1

x+y= 120
x= 3y
3y+y= 120
4y= 120
y= 120:4
y= 30
x= 30×3
x= 90
Proba:
90+30= 120

Answer 2

3y+y=120
4y=120 |:4
y=30
x+30=120
x=120-30
x=90