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24-09-2018
Mathematics

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Evaluate 7x-1 when x= 3

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24-09-2018

7x - 1 = 20

7 times 3 is 21, 21 minus 1 is 20

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24-09-2018

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Answer: 20

Why?

So we need to substitute x for 3, so do that. (7x-1 => 7 * 3 - 1) Multiply 7 by 3. (7 * 3 == 21) Finally, subtract by one. (21 - 1 == 20) Therefore, your answer is 20.

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