X+ 8y = 11 and -x -10 y=-19 elimination

There is diarrhea on the floor. what do i do? my mum gonna see that i diarrhea on the floor! * don't report, i'm serious! *

Zahra was given two data sets, one without an outlier and one with an outlier. data without an outlier: 15, 19, 22, 26, 29 data with an outlier: 15, 19, 22, 26, 29, 81

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).