Explanation for Question 6 From the Math (Calc) Section on the 2019 May Sat
So question six states, 2 if five X minus seven equals 13, 3 what is the value of 10 X minus 14? 4 So what we need to do here is we need to solve for X 5 using this equation here, and then plug that value of X in for 10 6 X minus 14, to find our answer. 7 So let's start by solving for X. 8 So I'm just going to rewrite that equation really quick. 9 So the first step here is to add seven to both sides. 10 So let's do that. And that gives us five X equals 20. 11 And then we can divide both sides by four or I'm sorry, 12 by five. And we get X is equal to four. 13 So now that we know what X is, we can just take that value 14 for and plug it in for 10 X minus 14. 15 So let's do that now. So our new equation is 10 times four 16 minus 14, 10 times four is 40. 17 So we can rewrite this as 40 minus 14. 18 And then that equals 26. 19 And so 10 X minus 14 equals 26. 20 And the answer is C.