2142+х=570*59
2142+х=33630
х=33630-2142
х=31488
--------------
2142+31488=33630
х*38=588+1578
х*38=2166
х=2166:38
х=57
----------------
57*38=2166
х-98*42=884
х-4116=884
х=5000
----------------------
5000-98*42=884
х:27=4032:48
х:27=84
х=24*84
х=2268
---------------------
2268:27=4032:48