The equation that has the solution x = -1 is D. 7x+8 = -6x - 5
To find the solution of an equation, we need to find the value of the variable that makes the equation true. In this case, we need to find the value of x that makes the equation 7x+8 = -6x - 5 true.
We can start isolating the x variable by adding or subtracting the same terms on both sides of the equation.
D. 7x+8 = -6x - 5
13x = -13
x = -1
So the solution of the equation is x = -1
We can check if this is the solution by substituting it back in the equation. If the equation is true, both sides will be equal when x is -1.
7x+8 = -6x - 5
7*-1 + 8 = -6*-1 -5
-7+8 = 6 -5
1 = 1 (true)
Therefore, D. 7x+8 = -6x - 5 has x = -1 as the solution.
