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Question

Solve the following equations:

(a) 10p = 100 (b) 10p + 10 = 100 (c)

(d) (e) (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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Solution

(a) 10 p = 100

(b) 10 p + 10 = 100

10 p + 10 − 10 = 100 − 10

10 p = 90

(c)

(d)

(e)

(f) 3 s = −9

(g) 3 s + 12 = 0

3 s + 12 − 12= 0 − 12

3 s = −12

(h) 3 s = 0

(i) 2q = 6

(j) 2q − 6 = 0

2q − 6 + 6 = 0 + 6

2q = 6

(k) 2q + 6 = 0

2q + 6 − 6 = 0 − 6

2q = −6

(l) 2q + 6 = 12

2q + 6 − 6 = 12 − 6

2q = 6


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