Answer: 7/9
Explanation:
Take 0.7777 to be x so
x=0.7777
You then multiply both sides of the equation by 10 so
10x=7.777
You need to do this as you must have one while part of the decimal on the left side of the decimal point.
You then minus x to get a while number, so
9x=7
Then divide by 9 to get x, so
x=7/9