Question

Valeria si Alecs au impreuna 38 de papusi. Valeria are cu 18 papusi mai multe. Cate papusi are fiecare?

Answer 1

FIE X,X+18 NUMARUL DE PAPUSI
⇒X+X+18=38
2X=38-18
2X=20
X=20:2
X=10
RASPUNS:VALERIA-28,ALEX-10

Answer 2

V |-----|+18|
A |-----|             } 38.

38 - 18 = 20       ( 2 parti egale)
20 : 2 = 10 papusi ( are Alex)
10 +18 = 28 papusi ( are Valeria)
Verificare : 10 + 28 = 38.