Order of Operations is like when you have a problem i always use PEMDAS it means parenthesis, expoents, mulitipication, divide, addition, Subtraction follow it.
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Solve the following by order of operations and explain your steps (10 x 5) + 25-10 / 2=
It means that for certain operations, you can change the order, such that a (operation) b = b (operation) a. For example, for addition: a + b = b + a, and for some types of multiplication, ab = ba.
It means: First, Outers, Inners, Last and is the order of operations when multiplying out bracket in algebra
Using the acronym PEMDAS, meaning parenthases, exponents, multiply/divide, add/subtract
Because if you did operations in an impermissible order, or violated laws of operations, then your solution to the equation is wrong.