1) решение: (7/2:14/3+14/3:7/2)•24/5=(7/2•3/14+14/3•2/7)•24/5=(1/2•3/2+2/3•2)•24/5=(3/4+4/3)•24/5=25/12•24/5=5•2=10
2)решение : (126/11-197/22):5/3=5/2•3/5=1/2•3=3/2=1 1/2=1,5
3) решение:((3/2)3 -3/4)•8/7=(27/8-3/4)=8/7=21/8•8/7=3
7*х=56, 56/х=7, 56/х=8
х=56/7, х=56/7, х=56/8
х=8, х=8, х=7
1)
х=5/1:1/2
х=5/1*2/1
х=10
2)х=1/2+5/6
х=3+5/6
х=8/6