решите уровнения
2х-5=9
0,6+х=7
0,4х-1=2
0,5х+3=5
2,5х-3=7
0,2х+7=8

2х - 5 = 92х = 9 + 52х = 14х = 14 : 2х = 70,6 + х = 7х = 7 - 0,6х = 6,40,4х - 1 = 20,4х = 2 + 10,4х = 3х = 3 : 0,4х = 7,50,5х + 3 = 50,5х = 5 - 30,5х = 2х = 2 : 0,5х = 42,5х - 3 = 72,5х = 7 + 32,5х = 10х = 10 : 2,5х = 40,2х + 7 = 80,2х = 8 - 70,2х = 1х = 1 : 0,2х = 5