Question

MATHEMATICS
EXERCISE 4.2
1. Give first the step you will use to separate the variable and then solve the equation:
(a) x – 1 = 0
(b) x + 1 = 0 (c) x-1= 5 (d) x + 6 = 2
() y - 4 = -7 (f) y - 4 = 4
(g) y + 4 = 4 (h) + 4 = – 4
2. Give first the step you will use to separate the variable and then solve the equation:
b
(a) 31 = 42 (b)
= 6
(d) 4x = 25
2.
5
7.
(e) 8y = 36
(h) 20t = - 10
3 4
5 15
· Give the steps you will use to separate the variable and then solve the equation:
P =4
7
a
Z
20p P = 40
3p = 6
(a) 3n - 2 = 46
(b) 5m + 7 = 17
(C)
(d)
3
10​

Answer 1

Answer:

a.x-1=0,X=1-0=0 so the X is 0 mark me the brainlest

Answer 2

1.

in these questions we will have to transpose the terms of LHS to RHS.

thus it becomes,

(a) x= 1

(b) x= -1

(c) x= 5+1=6

(d) x= 2-6= -4

(e) y= -7+4= -3

(f) y= 4+4=8

(g) y= 4-4=0

(h) y= -4-4=-8