State which of the following are equations (with a variable). Given reason for your answer. Identify the variable from the equations with a variable.
(a) 17 = x + 7
(b) (t - 7 ) > 5
(c)4/2 =2
(d) (7 x 3 ) - 19 = 8
(e) 5 x 4 - 8 = 2x
(f) x - 2 = 0
(g) 2 m < 30
(h) 2 n + 1 = 11
(i) 7 = 11 x 5
(j) 7 = 11 x 2
(k) 20 = 5 y
(l)3q/2<5
(m) z + 12 > 24
(n) 20 - 10 - 5
(o) 7 - x = 5