Matt Walsh + Papoušek = 200 Matt Walsh - Papoušek = 170 Matt Walsh = 170 + papoušek (170 + papoušek) + papoušek = 200 Papoušek + papoušek = 200 - 170 2Papoušek = 30 Papoušek = 30/2 = 15 Matt Walsh = 170 + 15 = 185