7x+3 = 5x+3 then x = ……………….A) – 1 B) – 3C) – 4 D – InterviewSolution

1.

7x+3 = 5x+3 then x = ……………….A) – 1 B) – 3C) – 4 D) 5

Answer»

Correct option is (B) –3

\(7^{x+3}=5^{x+3}\)

This happens only when x+3 = 0 \((\because7^0=1=5^0)\)

\(\Rightarrow\) x = -3

Correct option is B) – 3

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