Posted by **Tina** on Monday, October 6, 2008 at 2:06pm.

The difference of three times a number and 5 is 40. Find the number.

- Algebra -
**Ms. Sue**, Monday, October 6, 2008 at 2:19pm
3x - 5 = 40

3x = 45

x = ??

- Algebra -
**Tina**, Monday, October 6, 2008 at 2:33pm
is the answer 42...thank you Ms.Sue

- Algebra -
**Ms. Sue**, Monday, October 6, 2008 at 2:40pm
No. How can three times 42 - 5 = 40?

3x - 5 = 40

Add 5 to both sides of the equation.

3x = 45

Divide both sides of the equation by 3.

x = ??

- Algebra -
**marisa**, Monday, October 6, 2008 at 4:08pm
the answer would be 15 becuase when you divide 45 by 3 you would get 15

## Answer this Question

## Related Questions

- URGENT 8th Grade Math - Write a word phrase for the algebraic expression 3x-7. ...
- Math! Please Check My Answers - Key: ☺ = My Answer! 2. Write a word phrase...
- MS. SUE - MATH HELP PLEASE - The sum of five times a number and twice a second ...
- Algebra 1 - Find three consecutive even numbers such that the difference between...
- algebra - The difference between two numbers is 18. If the sum of three times ...
- Algebra =/ - One Number Added To Three Times Another Number Is 24. Five Times ...
- Algebra I - The sum of three numbers is 147. The second number is 4 more than ...
- Math - Directions : write the equation or an inequality 1.The difference of a ...
- Algebra - Negative three times the sum of a number and one is less than or equal...
- Algebra - eight times the difference of a number and three is equal to six times...

More Related Questions