- 2,8+х+5,36+(-7,2)+у+(-7,36)= - 2,8+х+5,36 - 7,2+у - 7,36=х+у - 12
при х= - 13, у=54
- 13+54 - 12=29
- 2,8+х+5,36+(-7,2)+у+(-7,36)= - 2,8+х+5,36 - 7,2+у - 7,36=х+у - 12
при х= - 13, у=54
- 13+54 - 12=29