Question

Помогите с домашнем заданием

Answer 1

0.2х=1.6
х=8

7х+5=0
7х=5
х=-7/5

27-4х=х+31
-4х-х=31-27
-5х=4
х=-4/5

3х-(7х-2)=18
3ч-7х+2=18
-4х+2=18
-4х=18-2
-4х=16
х=-4

-(х+6)+3(х+2)=0
-х-6+3х+6=0
2х=0
х=0

Answer 2

a)
0.2x=1.6
x=1.6/0.2
x=8
b)
7x+5=0
7x=-5
x= -5/7
в)
27-4x=x+31
27-31 = x+4x
-4 = 5x
x = -4/5
г)
3x-7x+2 = 18
-4x = 16
x= -4
д)
-x-6+3x+6=0
2x=0
x=0