75,368+х=168,3
х=168,3-75,368
х=92,932
75,368+92,932=168,3
х+15,448=42,91
х=42,91-15,448
х=27,462
27,462+15,448=42,91
75,368+х=168,3
х=168,3-75,368
х=92,932
75,368+92,932=168,3
х+15,448=42,91
х=42,91-15,448
х=27,462
27,462+15,448=42,91