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

Question

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

Answer 1

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 

Answer 2

A)4x-28=0
4х=28
х=28÷4
х=7

б)5x+1.4=0
5х=-1.4
х=-1.4÷5
х=-0.28

в)6x+1.8=0
6х=-1.8
х=-1.8÷6
х=-0.3

г)2x+3=3x-2
3х-2х=3+2
х=5

д)2x-1.7=0
2х=1.7
х=1.7÷2
х=0.85

е)x+9=4x+3
4х-х=9-3
3х=6
х=6÷3
х=2