Question

Решите- 1)3х+2=18 2)2х+6=4х-2 3)3х-12=2х 4)-15-3х=-7х+45 5)(2-х)+3(х-3)=-13

Answer 1

x=16/3

x=2

x=12

x=-0,8

x=-10

Answer 2

3х+2=18

3х=18-2

3х=16

х=16:3(дробью)

 

2х+6=4х-2

2х-4х=-2-6

-2х=-8

х=4

 

3х-12=2х

3х-2х=12

х=12

 

-15-3х=-7х+45

-3х+7х=45+15

4х=60

х=15

 

(2-х)+3(х-3)=-13

2-х+3х+9=-13

-х+3х=-13-9-2

2х=-24

х=-12