Type the correct answer in each box. use numerals instead of words. if necessary, use / for the fraction bar(s).

2x + 3y = -17 is one equation in a coincidental system of two linear equations. the other equation is y = x – 102.

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.