Answer: 
Step-by-step explanation:
Given
For figure (i) both triangles are congruent


For figure (ii)
Two triangles WXZ and WZY are congruent

If r=-3, then it would be -3-12 which equals -15
If the 8y/4 is the only fraction, the answer is x=7y
If the whole input of the equation is in a fraction, the answer is x=28y
:)
Answer:
20/9
Step-by-step explanation:
2/(9/10)=(2/1)(10/9)=20/9