Firstly, we will let this mystery number we are finding be labelled as x. Double this number can be written as 2x. 5 less than double this number is written as 2x - 5. And because this number is between -7 and 13, we have the full inequality, -7 < 2x - 5 < 13.
To solve this inequality, we want to isolate x, so we add 5 to all 3 parts of the inequality. Doing so cancels out the - 5 in the middle, so our new inequality is -2 < 2x < 18. Now we want to divide all 3 parts of the inequality by 2 to isolate x, so now our final inequality is -1 < x < 9. Thus, we can say that x is between -1 and 9.
first, you watch anime so your already big brain, you also watch that Luffy show which is old so your old so your smart...logic. Another reason is that your user name is "Key Master" referring to the og ghostbusters which is old. Now we know that you have more knowledge(cuz you've been on earth longer, also it says your in middle school) your smart.
