Verified answer

Ax + Bx = 6

Bx + Cx = 6

Cx + Ax = -2

Ax + 6 - Cx = 6

Ax - Cx = 0

Ax + Cx = -2

2Ax = -2

Ax = -1

Bx = 7

Cx = -1

Ay + By = 4

By + Cy = 8

Cy + Ay = 6

Ay + 8 - Cy = 4

Ay - Cy = -4

Ay + Cy = 6

2Ay = 2

Ay = 1

By = 3

Cy = 5

A(-1,1)

B(7,3)

C(-1,5)

pronto