Question

сократите дроби:
28a^2/21a; 15a-15b/25; 4a+4b/9a+9b

Answer 1

28а/21; 3а-3б/5; 4/9

Answer 2

28а^2/21а=28а/21 15а-15б/25=15 (а-b)/5×5=3 (a-b)/5 4a+4b/9a+9b=4 (a+b)/9 (a+b)=4/9