Question

Sumaa trei nr este 7050.Daca din fiecare se scade acelasi numar se obtin nr: 3600,1600,1400.Afla nr initiale

Answer 1

a+b+c=7050/a-x=3600,/b-x=1600/c-x=1400.....=>a=3600+x/b=1600+x/c=1400+x.....=>3600+x+1600+x+1400+x=7050...=>6600+3x=7050=>3x=450=>x=150.....a=3600+x=3600+150=3750/b=1600+150=1750/c=1400+150=1550

Answer 2

a+b+c=7050
a-x=3600 ⇒a=3600+x
b-x=1600 ⇒b=1600+x
c-x=1400⇒ c=1400+x

3600+x+1600+x+1400+x=7050
6600+3x=7050
3x=7050-6600
x=450/3
x=150

a=3600+x=3600+150=3750
a=3750
b=1600+150=1750
b=1750
c=1400+150=1550
c=1850

3750+1750+1850=7050