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The problem asks us to simplify the expression .
First, simplify the expression in the denominator:
Now, the expression becomes:
Next, simplify the fraction by canceling out common factors in the numerator and the denominator:
Further simplify the fraction by dividing both the numerator and the denominator by their greatest common divisor, which is 2:
Thus, the simplified form of the expression is .
Therefore, the solution to the problem is .
\( 100-(5+55)= \)
Order matters! You must simplify the denominator first: . Only then can you cancel common factors between numerator and denominator.
Not directly! The denominator contains , while the numerator has only . You can only cancel one factor of 'a'.
You're done when the greatest common factor of the numerator and denominator is 1. In this case, 7 and 3a share no common factors besides 1.
If all variables cancel out, you get a constant (just a number). But here, we have in the denominator and only in the numerator, so one 'a' remains.
Double-check your arithmetic! Common errors include forgetting to multiply 2×3=6 in the denominator or incorrectly canceling variables. The correct answer is .
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