Answer:
11
Step-by-step explanation:
11 + 10 = 21
Answer:
1
Step-by-step explanation:
1/(1+p+q^-1)+1/(1+q+r^-1)+1/(1+r+p^-1) = 1.
Answer:
2(x+y+2)=49
Step-by-step explanation:
Answer:
The area of the black square is equal to the sum of the areas of the gray squares.
Answer:

Step-by-step explanation:
