Answer:The value of x is -29 and the value of y is -26Step-by-step explanation:we know thatIf two figures are congruent, then its corresponding angles and its corresponding sides are congruentsoThe length of the corresponding sides must be equal[tex]-2x+2y=6[/tex] ----> equation A[tex]-7x+8y=-5[/tex] ----> equation BNoteThe length of one side of the triangle equal to -5 is not logical, however we will continue with the resolution of the problem for didactic purposes.Solve the system by graphingRemember thatthe solution of the system of equations by graphing is the intersection point both graphsusing a graphing toolThe solution is the point (-29,-26)see the attached figurethereforeThe value of x is -29 and the value of y is -26