If (5x-9) = 51, then 7x + 2 = ?
A 84
B 48
C 50
D 86
Solution
Correct Answer: Option D
(5x-9) = 51
⇒ 5x = 51+9 = 60
⇒ 5x = 60
⇒ x = 12
∴ 7x + 2 = 7.12 + 2 = 84+ 2 = 86
⇒ 5x = 51+9 = 60
⇒ 5x = 60
⇒ x = 12
∴ 7x + 2 = 7.12 + 2 = 84+ 2 = 86
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