Yes.
76 and 154 are both divisible by 2:
76/154 = 38/77
It is 5/22
yes
No, it cannot.
6/19
76/100, which can be reduced to 38/50, then to 19/25. So 19/25 reduced. Or 76/100 non reduced
The GCF is 2.
76 = 76/1 which cannot be reduced further.
Seventy-six and Seventy-eight, or 76+78 = 154
Half of 154 is 77, so your numbers are 76 and 78.
Expressed as a proper fraction in its simplest form, by dividing the numerator and denominator by 2, 42/76 = 21/38 or twenty-one thirty-eighths.
19/25
154/10 = 154 ÷10 = 15.4