
Concept explainers
The product of a number and 9, less 20 is 7.

Answer to Problem 7PPS
The required equation is
Explanation of Solution
Given:
Eighteen more than twice a number is 8.
Calculation:
Let the number be x.
In the sentence ‘eighteen more than’ means add 18 to something.
And ‘Twice a number’ means multiply 2 with number.
Eighteen more than twice a number is
The equation of the sentence “Eighteen more than twice a number is 8” is as follows
Hence, the required equation is
Conclusion:
Hence, the required equation is
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