Exercise 3.1
1. Write L.H.S and R.H.S of the following simple equations.
(i) 2x = 10
Solution:
L.H.S =
R.H.S =
(ii) 2x-3 = 9
Solution:
L.H.S =
R.H.S =
(iii) 14 = 27-y
Solution:
L.H.S =
R.H.S =
(iv) 5p+3 = 2p + 9
Solution:
L.H.S =
R.H.S =
2. Solve the following equations by trial and error method
(i) 2+y = 7
Solution:
The trial and error method involves substituting different values to find the correct solution.
y =
(ii) a-2 = 6
Solution:
a =
(iii) 5m = 15
Solution: m =
(iv) 2n = 14
Solution: n =