(a) Construct 3 equations starting with x = 2
(b) Construct 3 equations starting with x = − 2
(a) x = 2
Multiplying both sides by 5,
5x = 10 (i)
Subtracting 3 from both sides,
5x − 3 = 10 − 3
5 x − 3 = 7 (ii)
Dividing both sides by 2,
(b) x = −2
Subtracting 2 from both sides,
x − 2 = − 2 − 2
x − 2 = −4 (i)
Again, x = −2
Multiplying by 6,
6 × x = −2 × 6
6x = −12
Subtracting 12 from both sides,
6x − 12 = − 12 − 12
6x − 12 = −24 (ii)
Adding 24 to both sides,
6x − 12 + 24 = − 24 + 24
6x + 12 = 0 (iii)