Three less than two times a number is 5. What is the number? equation: n =
Mathematics · High School · Tue Nov 03 2020
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Given the statement:
Three less than two times a number is 5
Determine the number.
Solution:
The given statement can be written in numerical form in order to determine the number.
Three less than two times a number is 5 can be written as
3 - 2x = 5
Now in order to solve for the number, we transpose -2x and 5 on their opposite sides. Note that when transposing a number the sign changes.
2x = 3 - 5
2x = -2
Divide both sides by 2 in order to get the value of x or the value of number.
2x/2 =-2/2
x = -1
Check:
Substitute the value of x to the equation
3 - 2(-1) = 5
3 - (-2) = 5
3 + 2 = 5
5 =5
Final answer:
The value of the number is -1