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

4 answers

3x - 5 = 40
3x = 45
x = ??

is the answer 42...thank you Ms.Sue

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 = ??

the answer would be 15 becuase when you divide 45 by 3 you would get 15

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