We need to get rid of expression parentheses.
If there is a negative sign in front of it,
each term within the expression changes sign.
Otherwise, the expression remains unchanged.
Numerical 'like' terms will be added. There is only one group of like terms
the answer is: ab-4a-5
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The answer is C, since the number in the parenthesis represent what is being multiplied every year
<ABC = 61 * 2 = 122 degrees
Which is not labeled correctly