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First, we open the parentheses and change the sign accordingly.
Since there are only positive numbers inside the parentheses, multiplying by the minus will give us negative numbers:
Now we group the Y factors:
Now we obtain:
\( 100-(5+55)= \)
The negative sign outside the parentheses acts like multiplying by -1. So . Think of it as: the opposite of positive is negative.
The rule stays the same! A negative outside flips all signs inside. So becomes . Two negatives make a positive!
Look for terms with the same variable and exponent. Here, combines to , but and terms cannot be combined.
You must follow the order of operations! Always handle parentheses first by distributing, then combine like terms. Working left to right helps avoid sign errors.
Write each step clearly! First: . Then: . Finally: . Taking your time prevents mistakes.
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