7-0,4х = 0
-0,4х = -7
х = -7/-0,4
х=17,5
8x – 5 = 1x – 40
8x – x = – 40 + 5
7x = -35
x = -5
5=-1-(3-9x)
5 = – 1 – 3 + 9x
– 9x = – 3 – 1 – 5
-9x = -9
x = 1
(6x+1)-(3-2x)=14
6x + 1 – 3 + 2x = 14
6x + 2x = 14 + 3 – 1
8x = 16
x = 2
7-0,4х = 0
-0,4х = -7
х = -7/-0,4
х=17,5
8x – 5 = 1x – 40
8x – x = – 40 + 5
7x = -35
x = -5
5=-1-(3-9x)
5 = – 1 – 3 + 9x
– 9x = – 3 – 1 – 5
-9x = -9
x = 1
(6x+1)-(3-2x)=14
6x + 1 – 3 + 2x = 14
6x + 2x = 14 + 3 – 1
8x = 16
x = 2