Решите уровнения :
(4,6-х)*19=4,18 и 17,28/(56-х)=36

87,4-19х=4,1819х=87,4-4,1819х=83,22х=83,22:19х=4,38--------------------------------(4,6-4,38)*19=4,180,22*19=4,184,18=4,1856-х=17,28:3656-х=0,48х=56-0,48х=55,52------------------------------17,28:(56-55,52)=3617,28:0,48=3636=36