Example Solve
Solution : Rewriting,
Adding 1 to each side,
Multiplying by 7 to each side, x = 63
Example Solve
Solution : Multiplying by 9 to both sides,
Dividing each sides by 2, x = 6
Transposition :
Any term of an equation may be moved from one side to the other if the sign proceeding it is changed from + to  or from  to + as the case may be.
This movement is called transposition.
Example Solve 3 (2x + 1) + 4 = 8x + 1
Solution : Removing brackets, 6x + 3 + 4 = 8x + 1
\ 6x + 7 = 8x + 1
Moving 6x tothe right and 1 to the left side,
7  1 = 8x  6x
6 = 2x
i.e. 2x = 6
x = 3
Check :  When x = 3, 3 (2 x + 1) + 4
= 3 (6+1) + 4
= 25
also 8 x +1 = 8 (3) +1
= 25

Index
7.1 Definition 7.2
Simultaneous Equations 7.3
Inequations (Inequalities) 7.4
Absolute Values
Chapter 8
