Question

cum se aduna fractiile 5pe12+3pe20?

Answer 1

amplifici prima fractie cu 5 iar pe a doua cu 3. obtii (5x5+3x3):60=34:60

Answer 2

$\frac{5}{12}+\frac{3}{20}=\frac{25}{60}+\frac{9}{60}=\frac{25+9}{60}=\frac{34}{60}=\frac{17}{30}$