Răspuns :
Răspuns:
a) x= 12
b) x=50
Explicație pas cu pas:
x:(1+2+3+...+100)=60600
x:[100•(100+1):2]=60600
x:[50•101]=60600
x=60600:5050
x=12
(1+2+3+...+100):x=101
(100•101:2):x=101
5050:x=101
x=50
Răspuns:
a) x•(1+2+3+...+100)=60600
x·[(100·(100+1)]/2=60600
x·(100·101)/2=60600
x·5050=60600
x=60600:5050
x=12
b) (1+2+3+100):x=101
[(100·(100+1)]/2:x=101
(100·101)/2:x=101
5050:x=101
x=5050:101
x=50