Question

Rozwiąż równańia.
a)1/3x-2=x+2
b)1-6/7x=4/7
c)6(1/4x-2)=18

Answer 1

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

x-6=3x+6

x-3x=6+6

-2x=12

-x=6

x=-6

 

1-6/7x=4/7 |*7

7-6x=4

-6x=-3

x=0,5 

 

6(1/4x-2)=18

6 * 1/4x - 12 = 18

3/2x - 12 = 18 |*2 

3x - 24 = 36

3x = 60

x = 20