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According to the order of operations, first we solve the exercise within parentheses:
Remember that the product of a positive and a negative results in a negative, therefore:
Now we obtain:
We solve the exercise within parentheses:
Remember that the product of a negative and a negative results in a positive, therefore:
Now we obtain the exercise:
\( 100-(5+55)= \)
Parentheses always come first in order of operations (PEMDAS)! The subtraction sign outside waits until you've completely solved what's inside the parentheses.
Subtracting a negative is the same as adding a positive! Think: "minus a negative equals plus a positive". So .
Work from the innermost parentheses outward, one set at a time. Solve each completely before moving to the next outer level.
When you add negatives like , you get more negative. When you subtract a negative, you change direction and add the positive value instead.
Think of it like directions: "negative negative = positive". Two negatives cancel each other out, just like "don't not do it" means "do it"!
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