6th grade math help me pleaseee:(

Negative 5 1/12 + negative 4 1/4 + 6 3/4

If f(x)=x+7 and g(x)=1/x what is (fog)(x)

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.