a)
x - 5 = (1/3) x + 1 / * 3
3x - 15 = x + 3
3x - x = 3 + 15
2x = 18 / : 2
x = 9
==============
b)
x/4 - 1/4 = 2 / * 4
x - 1 = 8
x = 8 + 1
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a)
x - 5 = (1/3) x + 1 / * 3
3x - 15 = x + 3
3x - x = 3 + 15
2x = 18 / : 2
x = 9
==============
b)
x/4 - 1/4 = 2 / * 4
x - 1 = 8
x = 8 + 1
x = 9
==========