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Question

If 13 x + 5 = 8, then x = ?
(a) 3
(b) 6
(c) 9
(d) 12

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Solution

(c) 9

13x + 5 = 8
or, 13x + 5 - 5 = 8-5 [Subtracting 5 from both the sides]
or, 13x = 3
or, 13x × 3 = 3×3 [Multiplying both the sides by 3]
or, x = 9

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