What is the answer

1/2-1 6/4=?

pls with solution to the lowest term

Angeline is doing an experiment on the effect of the low temperatures on bacteria. she made a sample of bacteria cool at a temperature of -51°c and another at -76°c. what was the temperature difference in the two experiments

Cplomplete the table.for percent of change,indicate wheter the change is an increse or a decrease.round off your answer to the nearest hundredths (if rounding is needed).

P162000 is palce in an account at 4%compound annually for 2 years. it is then withdraw at the end of the two years and place in another bank at the rate of 5%compounded annually for 4 years. what is the balance in the second account after the 4 years. ( compare with the previous problem)​