-23,51-(14,03-×)=12,86
-23.51-14.03+х=12.86
х=23.51+14.03+12.86
х=37.54+12.86
х=50.4
-23,51-(14,03-х)=12,86
-23,51-14,03+х=12,86
-37,54-х=12,86
х=12,86+37,54
х=50,4