Determine whether it is true or false that the given number is a solution of the equation.
--5; 8x - 4x = -64.

Question

Quizplus · Accepted Answer

To check whether a number is a solution of an equation, we substitute the given number in place of the variable(s) and simplify both sides. If the resulting equation is true, then the given number is a solution. If the resulting equation is false, then the given number is not a solution.

In this case, we are asked to check whether -5 is a solution of the equation 8x - 4x = -64. Substituting -5 for x, we get:

8(-5) - 4(-5) = -64
-40 + 20 = -64
-20 = -64

The resulting equation is false, since -20 does not equal -64. Therefore, -5 is not a solution of the equation. The answer is B, False.

Determine Whether It Is True or False That the Given