4.5+12.5+10.5−13.5=?
Let's solve the exercise from left to right since we are only dealing with addition and subtraction operations:
According to the order of operations rules, we must first solve the multiplication exercises and then add them together:
Let's begin by expanding the parentheses. Make sure to pay attention to the minus and plus signs, which change accordingly:
We should obtain the following:
Now let's solve the exercise from left to right:
First we'll solve the multiplication exercise in the numerator:
and we'll get:
Let's begin by expanding the parentheses whilst paying attention to the minus and plus signs, which change accordingly:
We should obtain the following:
Now let's solve the exercise from left to right: