Question 662163
C=D+7,500,000
C+D=114,700,000
(D+7.500.000)+D=114,700,000
2D+7,500,000=114,700,000
2D=114,700,000-7,500,000
2D=107,200,000
D=107,200,000/2
D=53,600,000 NUMBER OF DOGS.
C=53,600,000+7,500,000
C=61,100,000 NUMBER OF CATS.
PROOF:
61,100,000+53,600,000=114,700,000
114,700,000=114,700,000