Algebra 2 (1st Edition)

Our two equations in this case (if the number of short sleeved T-shirts is $x$ and long-sleeved is $y$): $8x+10y=3715\\-88x-110y=-40865$ and $11x+16y=6160\\88x+128y=49280$ Then adding the two changed versions of equations we get: $18y=8335\\y\approx 463$. But then $x$ is negative, so this is not a realistic case.