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(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

Answer :

(a) 3I =42

Or, I=42/3 = 14

(b) b/2 = 6

Or, b=6×2=12

(c) p/7 = 4

Or, p= 4×7 = 28

(d) 4x=25

Or, x=25/4

(e) 8y=36

Or, y= 36 /8 = 36 ÷4/8÷4 = 9/2

(f) z/3= 5/4

Or, z= (5/4) ×3 =15/4

(g) a/5=7/15

Or, a= (7/15)× 5 =7/3

(h) 20t = -10

Or, t = -10 /20 = -1/2

- 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.3 Give the steps you will use to separate the variables and then solve the equation: (a) 3n – 2 = 46 (b) 5m + 7 = 17 (c) 20p/3=40 (d) 3p/10=6
- 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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