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Solve the following equation:

(a) 10 p = 100

(b) 10 p + 10 = 100

(c)p/4 = 5

(d) - p/3 = 5

(e) 3 p /4 =6

(f) 3s  = - 9

(g) 3s + 12 = 0

(h) 3s = 0

(i) 2 q = 6

(j) 2 q - 6 = 0

(k) 2 q + 6 = 0

(l) 2 q + 6 = 12

1 Answer

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Best answer

[Dividing both side by 10]

p =10 

(b)

[Subtracting both sides 10]

[Dividing both side by 10]

⇒ p = 9

(c)

[Multiplying both side by 4]

⇒ p = 20

(d)

[Multiplying both side by - 3]

⇒ p = -15

(e)

[Multiplying both side by 4]

[Dividing both side by 3]

⇒ p = 6

(f)

3s = -9  [Dividing both side by 3]

3s/3 = -9/3

⇒ s = -3

(g) 3s+12 = 0

⇒ 3s + 12 - 12= 0 - 12 [subtracting both side 12]

⇒ 3s = -12      [Dividing both side by 3]

⇒ 3s/3 = -12/3

⇒ s = -4

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