7/9-1/3; 1/4+1/6. Помогите.

Question

7/9-1/3; 1/4+1/6. Помогите.

Answer 1

7/9-1/3=7/9-1*3/9=7/9-3/9=4/9
1/4+1/6=1*3/12+2*1/12=3/12+2/12=5/12

Comments

спасибо

Answer 2

1) 7/9-1/3=7/9-3/9=4/9
НОЗ=9
2) 1/4+1/6=3/12+2/12=5/12
НОЗ=12