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According to the rules of the order of operations, we first solve the exercise within parentheses from left to right:
Now we get the exercise:
We solve the exercise from left to right:
3-
What is the result of the following equation?
\( 36-4\div2 \)
Division and multiplication have the same priority level, so when they appear together, we solve from left to right. Think of as two separate steps: first , then .
Subtraction must also go left to right! If you do instead of , you'll get the wrong answer because subtraction isn't associative.
Use PEMDAS normally, but be extra careful with negative signs. When you get , that negative stays with the 2 in the next step: .
No difference at all! Both : and ÷ mean division. Some countries prefer one symbol over the other, but they work exactly the same way in calculations.
Yes! You can substitute back: if the answer is , then should equal ✓. You can also use a calculator to verify each step.
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