a) 9x – 9 = x + 23
4
b) 7 – 5x = 7 + 2x
0
c) 25x – 16 – 9x = 20 + 24x – 10 – 10x
13
d) 13 + 4 ( 6x – 5) = 5 (5x + 2)
-17
e) 3x + 5 = 23
6
f) 8x – 12 = 28
5
g) 10y + 23 = 3
-2
h) 11 + 5z = 26
3
i) 6z + 8 = 11z – 7
3
j) 100 – 7x = 13x
5
k) 3(x + 7) = 4(2x – 1)
5
l) 9(y – 5) = 4y – 10
7
m) 2x(x – 3) = x(2x + 4) – 80
8