Răspunsuri

2014-06-15T20:43:21+03:00
402-x=237
x=402-237
x=165(al doilea nr)
402+165=567(suma)

2014-06-15T20:43:51+03:00
Notez numerele cu x si y.
x-y=237
x=402=>y=402-237=165
402+165=567