Question 266661
Hello, 
You are good so far except for one mistake in the second step. It would be two negatives in front of 1 to make it a positive 1. Here's the next step. (Hint: we want the x all alone on one side of the equal sign)
100=-(x-1)+4(x-6)
100=-x+1+4x-24 now combine like terms to get:
100=3x+-23 Now we add 23 to both sides to give us:
123=3x Divide both sides by 3 to get:
x=41
Make sense?
RJ 
Hey-I wrote a book about the basics that might help:
www.math-unlock.com