№61 б)2/7=3/4x; в)21/25=49/50x; 16/19=32:38x

Question

№61
б)2/7=3/4x;
в)21/25=49/50x;
16/19=32:38x

Answer 1

Б) 2/7=3/4х
х=2/7:3/4
х=2/7*4/3
х=8/21
в) 21/25=49/50х
х=21/25:49/50
х=21/25*50/49
х=6/7
(без буквы) :
16/19=32/38х
х=16/19:32/38
х=16/19*38/32
х=1