The given equation is 
By solving the given equation, we get


While solving the equation,we get 0=0.
Therefore, the given equation is true for all the values of y.
Hence, we can say that the given equation has infinite number of solutions.
The answer is C, 20/3g as quotient refers to the answer of a division problem.
Area of square=side^2
25=side^2
Side=5
-√4 + √(-48) + √121 + √(-108)
= -√(2²) + √(-1 • 3 • 4²) + √(11²) + √(-1 • 2² • 3³)
= -2 + 4√3 i + 11 + 6√3 i
= 9 + 10√3 i
x+y=45
x=y+7
Use substitution...
Plug y+7 into the first equation. You get (y+7)+y=45. Next combine the like terms. 2y+7=45. Subtract 7 from both sides and you get 38. Divide 2 on both sides to get y alone and you get 19. Since there are more cats than dogs, this is the amount of dogs. Add 19+7 since there are 7 more cats than dogs and you get 26 cats. Therefore there is 19 dogs and 26 cats.