Б)9 5/28-(7 1/7-х)=2 4/21

Question

Б)9 5/28-(7 1/7-х)=2 4/21

Answer 1

9 5/28 - ( 7 1/7 - Х ) = 2 4/21
9 5/28 - 7 1/7 + Х = 2 4/21
9 5/28 - 7 4/28 + Х = 2 4/21
2 1/28 + Х = 2 4/21
Х = 2 4/21 - 2 1/28
Х = 2 32/168 - 2 6/168
Х = 26/168
Х = 13/84