Order of operations: the rules of which calculation comes first in an expression.
They are: PEMDAS
<span><span>Do everything inside parentheses first: () </span><span>then do exponents: x2 </span><span>then do multiplies and divides from left to right </span><span>lastly do the adds and subtracts from left to right</span></span>
Order of operations is a certain rule found in mathematics. Also known as BODMAS, the order goes Brackets any numbers or operation in brackets, Of like any power, D for divison, M miultiplication A addition and S subtraction. You must follow the order, but if there are 2 DM or 2 AS in a row, you can do it from left to right. Hope it helps :) Puffin
Because when you subtract 115 - 45 it equals 70 then you add 70 + 69 which equals 139 then you subtract 237 - 139 it equals <u>98</u> which is your answer!
