Question

Simplificati fractia: 6+12+18+....+96
___________
8+16+24+....+128

Answer 1

$\frac{6+12+18+...+96}{8+16+24+...+128} = \frac{[(96*97):2]:6}{[(128*129):2]:8}= \frac{776}{1376}= \frac{388}{688}= \frac{194}{344} = \frac{97}{172}$
Cred ca asa se face :)

Answer 2

6+12+18+....+96
8+16+24+....+128=

96×(96+1)÷2
128×(128+1)÷2=

96×97÷2
128×129÷2=

9312÷2
16512÷2=

4656
8256=

apoi imparti si numaratorul si numitorul pana nu mai poate fi facuta simplificarea