1. (y-35)+12=32
2. 56-(x+12)=24
3. 55-(x-15)=30

(у-35)+12=32у=32-12+35у=55(55-35)+12=3232=32

1. (у-35)+12=32у-35=32-12у-35=20у=20+35у=55(55-35)+12=322. 56-(х+12)=24х+12=56-24х+12=32х=32-12х=2056-(20+12)=243. 55-(х-15)=30х-15=55-30х-15=25х=25+15х=4055-(40-15)=30