a)1/6 x x - 3/8 = 1/4 b)11/9 x x + 8/3 = - 2/3
1/6 x x = 1/4 + 3/8 11/9 x x = -2/3 - 3/8
1/6 x x = 5/8 11/9 x x = -10/3
x = 5/8 : 1/6 x = -10/3 : 11/9
x = 15/4 x = -30/11
c) 3/4 + 1/4 : x = -3 d) 14/3 : x = 40/9 + 1
1/4 : x = -3 - 3/4 14/3 : x = 49/9
1/4 : x = -15/4 x = 14/3 : 49/9
x = 1/4 : -15/4 x = 42/49.
e) x/2 - 11/5 = 7/8 x 64/49
x/2 - 11/5 = 8/7
x/2 = 8/7 + 11/5
x/2 = 117/35