Question

Решите уравнения:.
 2х=7,
 12,4=4х+6,
 4х+6=12,4,
 14х-18=4х-4,
 25-(7х-3)=28,
9-(2х+3)=2(4х-3)

Answer 1

2х=7
х=7:2
х=3,5

12,4=4х+6
12,4-6=4х
6,4=4х
х=6,4:4
х=1,6

Answer 2

14х-18=4х-4

Answer 3

ой

Answer 4

2x=7
x=7:2
x=3,5

12,4=4x+6
12,4-6=4x
6,4=4x
x=1,6
25-(7x-3)=28
25+7x+3=28
7x=28-28
7x=0
x=0