Answer:
the answer is 1/45
Step-by-step explanation:
just use the proportion method
Since you already know the solution, you need to substitute every occurrence of x and y with those values: the first equation checks out, because it becomes

The second becomes

Answer: 
Step-by-step explanation:
Given
Kira order 2 pieces of tuna and 5 pieces of crab
While Marcy ordered 3 pieces of tuna and 6 pieces of crab
Total tuna ordered =2+3=5 pieces
Total crab ordered=5+6=11 pieces
The ratio of Tuna and crab is 
Change x+y=5 to y=5-x
x+5-x=-3
0=-8
The answer is no solution. :)