Question

Afla doua nr stiind ca suma lor este 495 iar diferenta este 225.

Answer 1

a + b =495
a - b = 225

a |__|+225|
b |__| } 495

1+1=2 (segmente egale)

495-225=270 (suma celor doua segmente egale)

270:2=135 ( b )

135+225=360 ( a )

Answer 2

a+b=495 | + Adunam relatiile
a-b=225

___________
ax2=720
a= 720:2
a=360


a-b=225
360-b=225
b=360-225
b=135


Verificare: 

360+135=495
360-135=225