(i) 5x = 30
X = ![]()
X = 6
x = 6.
(ii)
= 5
5x – 1 = 10
5x = 11
X = ![]()
X = 2.2
x = 2.2
(iii)
= 0
![]()
7x +20 = 0
7x = -20
X = -![]()
x = -![]()
(iv)
+
-
= 0
![]()
X = 0
x = 0
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