Explanation for Question 17 From the Math (No Calc) Section on the 2020 October Sat
So question 17 is asking us what is the value of X? 2 So this is just a simple solve for X equation. 3 And whenever you're solving for X, you want to try to get your Xs 4 on one side of the equation and your normal numbers on the other. 5 So we can see here are two X terms. 6 So I'll start by subtracting four X from both sides. 7 That way I can get rid of the X's that are on the right 8 and just have two to eight X on the left. 9 Plus six is equal to eight from here. 10 I can subtract the six cause I'm trying to get all the normal numbers 11 now to the right side of my equation. So I have eight X is 12 equal to two. Last thing I need to do is divide by eight on 13 both sides. So I can cancel out this eight and I get the X 14 is equal to two over eight, and I can simplify that to one over 15 four. So your answer could be one over four or 0.2, 16 five.