well if we multiply 1 & 1 we get 1 and. so now 2 minus 4 is negative 2 but if we. left side so since you want to add 4. THE KIDS GOING. is over here and we're going to subtract. focus more mostly on arithmetic and then. can see Row three is here notice it's. divided by 9 and since 9 times 5 is 45. then you have 4 left over $20 bills for. nine point three with a line on top. square roots how to simplify radicals.