Solve this equation for x in terms of y and z: 6x+10y+8z=60. What is the value of x when y=2 and z=-3? Round your answer to the nearest hundredth.

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.