1.6(5.9-4x) - 3.21=31.85
9.44-6.4x-3.21=31.85
-6.4x +6.23=31.85
-6.4x=25.62
x= -4
not sure how to do the -6.4x=25.62
-6.4x=25.62
x = 25.62/-6.4
x = -4.003
thanks
You're welcome.
To solve the equation -6.4x = 25.62, you want to isolate the variable x on one side of the equation. Here are the steps to solve it:
1. Start with -6.4x = 25.62.
2. The goal is to move everything except x to the other side of the equation. To do this, you can add or subtract the same value from both sides of the equation without changing the equality.
3. In this case, you have -6.4x = 25.62. To move 6.23 from the left side to the right side, you can subtract 6.23 from both sides.
-6.4x - 6.23 = 25.62 - 6.23
4. Simplify the equation: -6.4x - 6.23 = 19.39.
5. Now, you have -6.4x = 19.39.
6. Lastly, to isolate x, divide both sides of the equation by -6.4:
(-6.4x) / (-6.4) = 19.39 / (-6.4)
This simplifies to:
x = -4.