Question

_Ionut si Cristi au impreuna 150 timbre. Cristi si George au 127 iar Ionut si George au 143. Cate timbre are Ionut?_ (va dau orice vreti plsss raspundeti!! )​

Answer 1

Răspuns:

I+C=150

C+G=127

I+G=143

2I+2C+2G=150+127+143=420

I+C+G=420:2=210

ne uitam la a doua relatie ,unde avem Crisi si George,lipseste Ionut:

I=210-127=83

ionut are 83

aflam cate are Cristi:

150-83=67

cristi are 67

aflam cate are George:

127-67=60

v:ionut 83+george 60+cristi 67=210

R=ionut83