you are subtracting w from 8w. Whenever there is a variable with no number beside it, it is an understood 1. so subtract 8w - 1w. This gives you 7w. then you move to the numbers with no variables. The 6 has a subtraction sign infront of it, which can be used as a negative sign. so -6 + 4 would be 2. therefore in whole, the answer would be 7w - 2. I do believe I am correct, but feel free to Comment if something should be corrected.
