Solve using the multiplication principle.
10x= -90
The solution is x = -9
please check
The answer looks ok to me but I don't know that you used the multiplication principle.
To solve the equation using the multiplication principle, follow these steps:
1. Start with the given equation: 10x = -90.
2. Divide both sides of the equation by 10 to isolate the variable x: (10x)/10 = (-90)/10.
This simplifies to: x = -9.
So, the solution to the equation 10x = -90 is x = -9.
Upon checking, if we substitute x = -9 back into the original equation, we can verify that it satisfies the equation:
10(-9) = -90.
-90 = -90.
Since both sides of the equation are equal, we can conclude that the solution x = -9 is correct.