Question

suma a 4 numere este 82.Daca din fiecare numar scade acelasi numar ,se obtin numerele10,20,15 si 5.Care sunt numerele?

Answer 1

82-4x=50,unde x este acelasi nr. care se scade
⇒4x=32⇒x=8
a-x=10 si x = 8⇒a=18
b-x=20. x=8 ⇒b=28
c-x=15.x=8⇒c=23
d-x=5.x=8⇒d=13
a+b+c+d=82
18+28+23+13=82

Answer 2

a+b+c+d=82
x-nr
a-x=10=>a=10+x
b-x=20=>b=20+x
c-x=15=>c=15+x
d-x=5=>d=5+x
10+x+20+x+15+x+x+5=82
50+4x=82
4x=82-50
4x=32
x=32:4
x=8