the product of 2 less than a number and 7 is 13

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the product of 2 less than a number and 7 is 13

Take this algebraic expression in 4 parts:

Part 1 - The phrase a number means an arbitrary variable, let's call it x.
x

Part 2 - 2 less than a number means we subtract 2 from x
x - 2

Part 3 - The phrase product means we multiply x - 2 by 7
7(x - 2)

Part 4 - The phrase is means an equation, so we set 7(x - 2) equal to 13
7(x - 2) = 13