Question

Compuneri o problema cu a+(a-b)+c

Answer 1

Alina a facut 23 prajituri,Nina a facut cu 5 mai putine decat Alina.Ion a facut 17 prajituri.Cate prajituri au facut copii in total?
Schema:
Alina...23 p._____ |
Nina ...?,cu 5 m.p._| | ? p.
Ion ..... 17 p. |
Rezolvare:
1)23-5=18- a facut Nina
2)23+18+17=58-in total
Ex.:23+(23-5)+17=58 p.
Raspuns:58 prajituri au facut copii in total.