6. Solve the system using elimination.
2x - 2y = -8
x + 2y = -1
O(-3, 1)
O (1,5)
O (-14, 1)
O (0,4)

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.