Students a and B solved the system of equations ax + by = 3 cx-2y = 5 A with respect to XY, and the correct solution is Students a and B solve the system of equations about XY AX+BY=3 Cx-2y = 5 a gets the correct solution as x = - 1, y = - 3, B copies the wrong value of C, x = 5, y = 6 finds the value of a / C + ab

Students a and B solved the system of equations ax + by = 3 cx-2y = 5 A with respect to XY, and the correct solution is Students a and B solve the system of equations about XY AX+BY=3 Cx-2y = 5 a gets the correct solution as x = - 1, y = - 3, B copies the wrong value of C, x = 5, y = 6 finds the value of a / C + ab

X = - 1, y = - 3, substituting ax + by = 3 to get - a-3b = 3, substituting cx-2y = 5 to get C = 1
Substituting x = 5, y = 6 into ax + by = 3 leads to 5A + 6B = 3
A=3,B=-2

A/C+AB=3/1+(-6)=-3