Question

Prosze dam naj szybko

Pomcie y matmy daje naj

1/3x - 2 = x+2

1- 6/7x = 4/7

6 (1/4x-2) = 18

x/6 -1/6=1

-2(2x-1) = x/3

2/5(3-x) = -2

3/4(2-3x)= -6

1/5 ( x-3) = 9 - x

0,6+x =x+1

______

2

jakby co to jest zapisane w ułamkach niektore ztakie jak np. 2/3 cy 4/5 takie pryzkady hehe

Answer 1

a)

1/3x-2=x=2|*3

x-6=3x=6

x-3x=12

-2x=12| :(-2)

x= -6

 

 

b) 1-6/7x=4/7
-6/7x=4/7-1
-6/7x=-3/7 /*(-7/6)
x= 21/42
x=1/2

 

c) 6 (1/4x - 2)=18
6/4x-12=18
3/2x=18+12
3/2x =30 /*2/3
x=60/3
x=20

 

d) x/6 - 1/6 = 1
1/6x=1+1/6
1/6x=1 i 1/6
1/6x=7/6 /*6
x=7

 

e)-2 (2x-1) = x/3
-4x+2=1/3x
-4x-1/3x=-2
-4 i 1/3 x =-2
-13/3 x = -2 /*(-3/13)
x=6/13

 

 

f) 2/5 (3 - x) = -2
6/5-2/5x=-2
-2/5x = -2 -1 i 1/5
-2/5x=-3 i 1/5
-2/5x = -16/5 /*(-5/2) 
x =8

 

 

g) 3/4 (2-3x) = -6
6/4 - 9/4x=-6
3/2-9/4x=-6
-2 i 1/4x=-6-1 i 1/2
-9/4 x=-7 i 1/2
-9/4 x=-15/2 /*(-4/9)
x = 10/3
x=3 i 1/3

 

 

h) 1/5 ( x - 3 )= 9 - x /*5
x-3=45-5x
6x=48 /6
x=8

i) 0,6+x/2 = x + 1 
6/10+x/2=x+1 /*10
6+5x=10x+10
-5x=4 /-5
x= -4/5