If three times a number is minus 2 equals 13
English · High School · Thu Feb 04 2021
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Given the statement:
three times a number is minus 2 equals 13.
Determine the value of the number.
Solution:
In order to determine the value of the number, we must represent first the given in an equation.
3x - 2 = 13
To solve for the number, we solve for x. Transpose -2 to the other side of the equation, hence it must be taken to note that in transposing a number, the sign changes.
3x - 2 = 13
3x = 2 + 13
3x = 15
Divide both sides by 3 in order to determine the value of x.
3x/3 = 15/3
x = 5
Final answer:
x =5