👤

calculati scotand factor comun:3/19 ×3/7+3/19×4/7

Răspuns :

3/19x3/7+3/19x4/7
3/19(3/7+4/7)
3/19x7/7
3/19x1=3/19
3/19×3/7+3/19×4/7
=3/19(3/7+4/7)
=3/19×7/7
=21/133 (simplificam prin 7)
=3/19