1)Z-1 3/4=2 7/12; z=31/12+7/4; z=31/12+21/12; z=52/12; z=13/3; z=4 ц 1/3;/////2)т-7 1/9=2 5/36; т=77/36+64/9;
Т=77/36+256/36; т=333/36; т=111/12;
Т=9 1/4; //////3)N-10 7/12=3 1/6; N=19/6+127/12; N=38/12+127/12; N=165/12; N=13 3/4; ////4)k-6 1/7=1 5/14; k=19/14+43/7;
K=19/14+86/14; k=105/14; k=7 1/2