а) 5x-12,5=0
5x = 12.5
x = 12.5 : 5
x = 2.5
б) 3x-0,6=x+4,4
3x - x = 4.4 + 0.6
x(3 - 1) = 5
2x = 5
x = 5 : 2
в) 4x-(7x-2)=17
4x - 7x + 2 = 17
4x - 7x = 17 - 2
x(4 - 7) = 15
-3x = 15
x = 15 : (-3)
x = -5
а) 5x-12,5=0
5x = 12.5
x = 12.5 : 5
x = 2.5
б) 3x-0,6=x+4,4
3x - x = 4.4 + 0.6
x(3 - 1) = 5
2x = 5
x = 5 : 2
x = 2.5
в) 4x-(7x-2)=17
4x - 7x + 2 = 17
4x - 7x = 17 - 2
x(4 - 7) = 15
-3x = 15
x = 15 : (-3)
x = -5