2 years ago

Evaluate 7x-1 when x= 3

Mathematics

2 answers:

irina1246 [14]2 years ago

5 0

Hello there! And welcome to brainly . com, your #1 asking and answering site!

Answer: 20

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.

Hope this helped you, and have a beautiful day!! ♥

kondaur [170]2 years ago

3 0

7x - 1 = 20

7 times 3 is 21, 21 minus 1 is 20

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