х+15 7/12=16 7/24+10 13/15
х+15 7/12=27 19/120
х=27 19/120-15 7/12
х=11 23/40
11 23/40+15 7/12=16 7/24+10 13/15
27 19/120=27 19/120
х+15 7/12=16 7/24+10 13/15
х+15 7/12=27 19/120
х=27 19/120-15 7/12
х=11 23/40
11 23/40+15 7/12=16 7/24+10 13/15
27 19/120=27 19/120