Răspuns :
x-al 2-lea numar
x+250-primul numar
(x+250)-180-al 3-lea numar
x+x+250+x+250-180=2450
3x+250+250-180=2450
3x+500=2450+180
3x+500=2630
3x=2630-500
3x=2130
x=2130:3
x=710-al 2-lea numar
x+250= 710+250=960 - 1 numar
x+250 - 180=960 - 180 = 780 -al 3-lea numar
x+250-primul numar
(x+250)-180-al 3-lea numar
x+x+250+x+250-180=2450
3x+250+250-180=2450
3x+500=2450+180
3x+500=2630
3x=2630-500
3x=2130
x=2130:3
x=710-al 2-lea numar
x+250= 710+250=960 - 1 numar
x+250 - 180=960 - 180 = 780 -al 3-lea numar
x+y+z = 2450
x = 250+y ==>y = x-250
x = 180+z ==> z = x-180
X+(x-250) +(x-180) = 2450 ==> 3x = 2880 ==>
x = 960
y = 960 - 250 = 710
z = 960 - 180 = 780