1) 3х =28-х
3х+х =28
4х =28
х =28/4
х=7
4)6х -19 = -х - 10
6x + x = – 10 + 19
7x = 9
x = 9/7
х=1,28571428571
2)5х + 12 = 8х + 30
5x – 8x = 30 – 12
-3x = 18
x = -6
5)0,7 - 0,2х = 0,3х - 1,8
– 0,2x – 0,3x = – 1,8 – 0,7
-0.5x = -2.5
x = 5
3)33 + 8х = -5 + 72
8x = 72 – 5 – 33
8x = 34
x = 4.25
6)0,1х + 9 = 0,2х -4
0,1x – 0,2x = – 4 – 9
-0.1x = -13
x = 130
1) 3х =28-х
3х+х =28
4х =28
х =28/4
х=7
4)6х -19 = -х - 10
6x + x = – 10 + 19
7x = 9
x = 9/7
х=1,28571428571
2)5х + 12 = 8х + 30
5x – 8x = 30 – 12
-3x = 18
x = -6
5)0,7 - 0,2х = 0,3х - 1,8
– 0,2x – 0,3x = – 1,8 – 0,7
-0.5x = -2.5
x = 5
3)33 + 8х = -5 + 72
8x = 72 – 5 – 33
8x = 34
x = 4.25
6)0,1х + 9 = 0,2х -4
0,1x – 0,2x = – 4 – 9
-0.1x = -13
x = 130