Question

x+y-z=1999 si 6=3x Aratati ca daca z<5, atunzi z=.....

Answer 1

-3x = -6
x = 2
daca z=5:
y = 2002
2 + 2002 + -1z = 1999
2 + 2002 = 2004 2004 + -1z = 1999  2004 + -1z = 1999
2004 + -2004 + -1z = 1999 + -2004
2004 + -2004 = 0 0 + -1z = 1999 + -2004 -1z = 1999 + -2004
1999 + -2004 = -5 -1z = -5
 -1 z = -5
z = 5