The difference of three times a number and 5 is 40. Find the number.
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
To find the number, we need to set up an equation based on the given information. Let's represent the number as 'x'. According to the problem, the difference of three times that number and 5 is 40.
So, we can set up the equation:
3x - 5 = 40
To solve for 'x', we can follow these steps:
1. Add 5 to both sides of the equation to isolate the term with 'x':
3x - 5 + 5 = 40 + 5
3x = 45
2. Divide both sides of the equation by 3 to isolate 'x':
3x/3 = 45/3
x = 15
Therefore, the number is 15.