The best first step in solving the equation -4x + 10 is to add 5 to both sides.
Here's the step-by-step solution:
1. Start with the equation: -4x + 10.
2. To isolate the variable term (-4x), add 5 to both sides:
-4x + 10 + 5 = 0 + 5
This simplifies to:
-4x + 15 = 5
-4x= -10
x =5/2
3. Now you have the equation -4x + 15 = 5.
You should add 5 to both sides to start simplifying the equation and isolate the variable term (-4x).