Explain why the equation 5x-7=7 has only one solution?

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asked Jul 15, 2021 166k views

2 Answers

Delcon · Answer 1 · 2021-07-17T11:44:53+0000

You don’t even have to solve for x. You know x only has 1 solution because it is to the power of 1, if x had an even exponent (for example 2 and x=4) the it could have two possible answers as both 2 and -2 square to 4.

Explain why the equation 5x-7=7 has only one solution?

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