Answer:
The value of x in this equation is -23
Step-by-step explanation:
The given equation is:
[tex]-x-8 = 15[/tex]
The given equation is a linear equation in one variable. The solution of the equation requires isolating x on one side of the equation.
Properties of equality will be used to find the solution.
Using Addition property of equality
Adding 8 on both sides
[tex]-x-8+8 = 15+8\\-x = 23[/tex]
Multiplication property of equality
Multiplying both sides by -1
[tex]x = -23[/tex]
Verification:
[tex]-x-8 = 15\\-(-23)-8 = 15\\23-8 = 15\\15 = 15[/tex]
Hence,
The value of x in this equation is -23
