Write out variable expression for the following.
I. 15 more than a number
II. 6 less than a number
III. The product of a number m and 7
Its part of a review but I don't understand it.
n + 15
n - 6
7m
Sure! Let's break down each variable expression step by step:
I. 15 more than a number:
To express "15 more than a number" as a variable expression, let's call the number "x". We can represent "15 more than x" as x + 15.
II. 6 less than a number:
Similarly, if we call the number "x", we can represent "6 less than x" as x - 6.
III. The product of a number m and 7:
In this case, instead of using "x" as the number, we can use a different variable, like "m". The expression "the product of a number m and 7" can then be written as 7m.
To summarize:
I. 15 more than a number: x + 15
II. 6 less than a number: x - 6
III. The product of a number m and 7: 7m
Remember, variables can represent unknown numbers or quantities, and the expressions provided allow us to solve problems without knowing the actual values of the numbers involved.