x + |5| = 7 I Don't know how to solve this
Mathematics · High School · Mon Jan 18 2021
Answered on
Given:
x + | 5 | = 7
Determine the value of x.
Solution:
| | generally stands for the absolute value of a number, which means that the value of the number will always be positive even though it is a negative number, hence in our case we have a positive number therefore we'll copy the number as it is, and then transpose it to the other side of the equation, we must take note that in transposing, the sign changes. Hence the absolute value will not apply anymore during the transposition of the number since it is already been taken.
x + | 5 | = 7
x + 5 = 7
x = 7 - 5
x = 2
Final answer:
x = 2