To simplify the expression a - 3/4 - 5/8, we need to find a common denominator for the fractions. The least common multiple (LCM) of 4 and 8 is 8, so we can rewrite the expression:
a - (3/4) - (5/8) = a - (6/8) - (5/8)
Now that the denominators are the same, we can combine the fractions:
a - (6/8) - (5/8) = (a - 6 - 5)/8
(a - 11)/8
Therefore, the simplified expression is (a - 11)/8.
a − 3 4 − 5 8
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