Find the least value of x which satisfies the equation 4x...
Find the least value of x which satisfies the equation 4x = 7(mod 9)
7
6
5
4
Correct answer is D
4x = 7 (mod 9)
4x = 7 + 9 (mod 9)
\(\frac{4x}{4} = \frac{16}{4}\) (mod 9)
x = 4
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