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According to the order of operations, we first solve the exercise within parentheses:
Now we obtain:
Remember that the product of a negative and a negative results in a positive, therefore:
Now we obtain:
\( 70:(14\times5)= \)
The order of operations (PEMDAS) requires you to solve parentheses first! Going left to right would give you the wrong answer because math has specific rules about which operations to do first.
Subtracting a negative is the same as adding a positive! Think of it as: . The two negative signs cancel each other out.
Think of it like this: if you remove a debt, you're actually gaining money! So removing a negative (subtracting) gives you a positive result.
Then you just subtract normally! For example, if you had . The key is always solving the parentheses first.
Yes! You can work backwards: if 40 is correct, then , and . Both check out, so 40 is right!
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