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-6/7 x = 4/7 - 1
-6/7 x = -3/7 /:6
-1/7 x = - 1/14 / * -7
x = 7/14
x = 1/2
b)6(1/4 x-2) = 18
6/4x=18 +12
3/2 x = 30 /:3
1/2x = 10 /*2
x = 20
- 6/7x= 4/7 -1
-6/7x= -3/7 /: (-6/7)
x= -3/7 * (-7/6)
x= - 1/2
b) 6 (1/4x - 2)=18
6/4x - 12=18
6/4x= 18+12
6/4x= 30 /:6/4
x= 30* 4/6
x= 20
powinno być dobrze ;))
-6/7x = 4/7 - 7/7
-6/7x = -3/7 /:(-6/7)
x = -3/7 * (-7/6)
x = 21/42
x = 1/2
6(1/4x - 2) = 18
6/4x - 12 = 18
6/4x = 18 +12
6/4x = 30/: 6/4
x = 30*4/6
x =120/6
x = 20