а)
6x - 12 = 4x - 8
6x-4x=12-8
2x=4
x=2
б)
2/3x = 18
x=18:(2/3)
x=18·(3/2)
x=27
в)
(2x - 5) - (3x - 7) = 4
2x-5-3x+7=4
2x-3x=4-7+5
-x=2
x=-2
г)
5(x - 1,2) - 3x = 2
5x - 6 - 3x = 2
5x-3x=2+6
2x=8
x=4
а)
6x - 12 = 4x - 8
6x-4x=12-8
2x=4
x=2
б)
2/3x = 18
x=18:(2/3)
x=18·(3/2)
x=27
в)
(2x - 5) - (3x - 7) = 4
2x-5-3x+7=4
2x-3x=4-7+5
-x=2
x=-2
г)
5(x - 1,2) - 3x = 2
5x - 6 - 3x = 2
5x-3x=2+6
2x=8
x=4