First, convert the mixed number to an improper fraction:
a = 4 2/3 = (3 * 4 + 2)/3 = 14/3
Now substitute a = 14/3 into the expression:
5/7 14/3 + 3/14 14/3= 70/21 + 42/42= (70 + 42)/21= 112/21= 16/3
Therefore, 5/7a + 3/14a = 16/3 when a = 4 2/3.
First, convert the mixed number to an improper fraction:
a = 4 2/3 = (3 * 4 + 2)/3 = 14/3
Now substitute a = 14/3 into the expression:
5/7 14/3 + 3/14 14/3
= 70/21 + 42/42
= (70 + 42)/21
= 112/21
= 16/3
Therefore, 5/7a + 3/14a = 16/3 when a = 4 2/3.