(7 3/22-x)+4 9/44= 9 8/33 -4 2/77
7 3/22х+4 9/44=5 50/231
7 3/22х=5 50/231-4 9/44
7 3/22х=1 11/924
х=1 11/924:7 3/22
х=0,142