Очень надо.Решите уравнения: |7х-2|=0 |5х-4|=0 |10х-1|=0
|7x-2| = 0 -> 7x-2=0 -> 7x = 2 -> x = 2/7 |5x-4| = 0 -> 5x - 4 = 0 -> 5x = 4 -> x = 4/5 |10x - 1| = 0 -> 10x -1 = 0 -> 10x = 1 -> x = 1/10
|7х-2|=0 7х-2=0 7x=0+2 7x=2 x=7:2 x=3,5 |5х-4|=0 5х-4=0 5х=0+4 5х=4 х=4:5 х=0.8 |10х-1|=0 10х-1=0 10x=0+1 10x=1 x=1:10 х=0.1