4-7/15+1-х/3=4-2х+1/5
4 - 7/15 +1 - x/3 = 4 - 2x + 1/5 60 - 7 + 15 - 5x = 60 - 30x + 3 30x - 5x = 60 + 3 - 60 + 7 - 15 25x = -5 x = -0,2