Please answer all of these problems

After the seventh month of a 12-month loan: the numerator is: {(n + 11) + (n + 10) + (n + 9) + (n + 8) + (n + 7) + (n + 6) + (n + 5)} = , and the denominator is: {(n) + (n + 1) + + (n + 11)} = . therefore, the fraction is numerator/denominator (to the nearest tenth) = %

Solve 3x-18=2y and 5x-6y=6 by elimination show work

Gh bisects fgi. find the measure of hgi •15° •21° •10° •8°