Question

помогите два номера. плиз!!!!!

Answer 1

номер 1:
1/3 9/7
2/3 11/10
номер 2 :
a*c/b.

7*30/

Answer 2

2) a/b × c = a×c/b. 3) а) 7/10 × 30 = 7 × 30/10 = 21; б) 4/15 × 50 = 4 × 50/15 = 13 1/3; в) 3 × 5/12 = 3 × 5/12 = 1 1/4 г) c × a/b = c × a/b