How to write as an equation

Question

The sum of seven times a number, and 7, is equal to six times the number?

Answer 1

The sum of 7 times a number (x) and 7 ----> 7*x + 7

6 times that same number -----> 6*x

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(7x) + 7 = 6x

Answer 2

Let X stand for the unknown number. The sum of seven times that number plus 7 may be written as: 7X + 7. We are told that this quantity is equal to 6X. Therefore, we can write

7X + 7 = 6X. If we subtract 6X from both sides of the equation, we get the following:

7X + 7 = 6X

- 6X - 6X

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X + 7 = 0

Therefore, X = -7