2/5 - 3/5х = 2/5 - 1/10х + 3
-3/5х + 1/10х = 2/5 - 2/5 + 3
2/5 - сокращается
-6/10х + 1/10х = 3
-5/10х = 3
-1/2х = 3
х = 3 ÷ (-1/2)
х = 3 × (-2/1)
х = -6
2/5 - 3/5х = 2/5 - 1/10х + 3
-3/5х + 1/10х = 2/5 - 2/5 + 3
2/5 - сокращается
-6/10х + 1/10х = 3
-5/10х = 3
-1/2х = 3
х = 3 ÷ (-1/2)
х = 3 × (-2/1)
х = -6