a) 2(x + 3) = 6
2x + 6 = 6
2x = 6 - 6
2x = 0 /:2
x = 0
b) 1/3(x - 1) = 2
1/3x - 1/3 = 2
1/3x = 2 + 1/3
1/3x = 2 1/3 /: 1/3
x = 7/3 • 3/1
x = 7
c) 2/5(2x - 1) = x + 1
4/5x - 2/5 = x + 1
4/5x - x = 2/5 + 1
-1/5x = 1 2/5 /: (-1/5)
x = 7/5 • (-5/1)
x = -7
d) 6(-x + 3) = - 18
-6x + 18 = - 18
-6x = - 18 - 18
-6x = -36 /: (-6)
x = 6
powodzonka i miłego wieczoru :))
