Question

How do you translate “nine less than the product of a number and seven” into a mathematical expression?

Answer 1

Hint: To solve this problem, we will have to understand the question carefully that what a question is asking us to do. In this question, we have to find a mathematical expression or we can say we have to translate in the mathematical expression of the sentence “nine less than the product of a number and seven”. Firstly, we will take a variable n for that number which is going to be multiplied by seven. After that, we will subtract 9 from the multiplied number. Then, we will get a solution.

Complete step by step answer:
Let us solve this question.
The question is saying that we have to translate the sentence “nine less than the product of a number and seven” into a mathematical form. And, also we will have to take a variable n for that number.
Let the number be n.
Then, the product of that number n and 7 is 7n.
And nine less than that number which is a product of a number n and seven will be 7n-9.
Therefore, the translation of “nine less than the product of a number and seven” into a mathematical expression is 7n-9.

Note:
One can make mistake here at the time of solving this type of problem. Students can make silly mistakes like they will not read the questions carefully and did not understand the question. Then, they will not find a better and perfect solution. For example, they may write 9-7n or (7+n) - 9. Therefore, they should be aware of that.