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(a) 3n – 2 = 46

(b) 5m + 7 = 17

(c) 20p/3=40

(d) 3p/10=6

Answer :

(a) 3n-2 =46

Or, 3n = 46+2

Or, n = 48/3 = 16

(b) 5m +7 = 17

Or, 5m = 17 -7

Or, m = 10/5 = 2

(c) 20p/3 = 40

Or, 20p= 40×3

Or, p= 120 /20 = 6

(d) 3p/10 = 6

Or, 3p = 6×10

Or, p = 60 /3 = 20

- Q.1 Given 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 (e) y – 4 = -7 (f) y -4 = 4 (g) y + 4 = 4 (h) y + 4 = -4
- Q.2 Give first the step you will use to separate the variable and then solve the following equation: (a) 3l = 42 (b) b/2= 6 (c) p/7=4 (d) 4x =25 (e) 8y=36 (f) z/3=5/4 (g) a/5=7/15 (h) 20t=-10
- Q.4 Solve the following equations: (a) 10p = 100 (b) 10p + 10 = 100 (c) p/4=5 (d) -p/3=5 (e) 3p/4=6 (f) 3s = -9 (g) 3s + 12 = 0 (h) 3s = 0 (i) 2q = 6 (j) 2q – 6 = 0 (k) 2q + 6 = 0 (l) 2q + 6 = 12

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