Решите уравнение

a) 4x-28=0

б) 5x+1.4=0

в) 6x+1.8=0

г) 2x+3=3x-2

д) 2x-1.7=0

е) x+9=4x+3

4x - 28 = 0

4x = 28

x = 28/4

x = 7

==

5x + 1.4 = 0

5x = - 1.4

x = - 0.28

==

6x + 1.8 = 0

6x = - 1.8

x = - 0.3

==

2x + 3 = 3x - 2

2x - 3x = - 2 - 3

-x = - 5

x = 5

==

2x - 1.7 = 0

2x = 1.7

x = 1.7/2

x = 0.85

==

x + 9 = 4x + 3

x - 4x = 3 - 9

-3x = - 6

x = 2

A) 4x-28=0

4 х=28

х=28:4

х=7

б) 5x+1.4=0

5 х=-1.4

х=-1.4:5

х=-0.28

в) 6x+1.8=0

6 х=-1.8

х=-1.8:6

х=-0.3

г) 2x+3=3x-2

3 х-2 х=3+2

х=5

д) 2x-1.7=0

2 х=1.7

х=1.7:2

х=0.85

е) x+9=4x+3

4 х-х=9-3

3 х=6

х=6:3

х=2