Solve these number problems by first writing an equation. a The sum of a certain number and 11 is 23. What is the number?
Let the number
b A certain number minus 9 is equal to 13. What is the number?
be n.
c 15 minus a certain number is equal to 8. What is the number?
d The product of 9 and a certain number is 108. What is the number?
e The sum of a certain number and 3 is -5. What is the number?
f A certain number is bigger than 10 and the difference from 10 is 7. What is the number?
a If a number is multiplied by 3, and 5 is added to the product,
• These will be
the result is 17. What is the number?
b When 6 is subtracted from the product of 4 and a certain number,
two-step
the answer is 14. What is the number?
equations!
• Also, you may
C The sum of a certain number and 3 is then multiplied by 7.
need grouping
If the answer is 63, what is the number?
symbols.
d The product of a certain number and 5 is subtracted from 90.
If the answer is 25, what is the number?
e 9 is subtracted from a certain number and the result is multiplied
If n is an even
by 4. If the answer is 24, what is the number?
number, then the
f The sum of two consecutive integers is 23. What are the integers?
next one will be

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