Question

Suma a doua numere este225,iar diferenta lor este15.Sa se afle cele doua numere

Answer 1

a+b= 225
a-b = 15
a=?   b =?

a |----------|15|
b |----------|           } 225.

225 - 15 = 210 ( 2 segmente egale)
210 : 2 = 105 (b)
105 + 15 = 120 (a)
Proba : 120 +105 = 225 ( a+b).

Answer 2

a+b=225 a-b=15 --------------------- 2a=240 a=240÷2 a=120 inlocuim in a+b=225 120+b=225 b=225-120 b=105 Verificare:a+b=225 120+105=225 a-b=15 120-105=15 Sper sa-ti fie de ajutor