Subtracting a negative integer is the same as adding a positive integer. Adding a positive integer to any number always makes the answer larger than the original number. Therefore, if you subtract one negative integer from another your answer will be always be *greater* than the integer you started with.
X-7=18
+7 to both side
X=25
13 divided by 1997 is 0.0065097646
Answer:
y = 1.5
Step-by-step explanation:
Given x is inversely proportional to 
, then the equation relating them is
y = 
← k is the constant of proportion
To find k use the condition when x = 8, y = 2
2 = 
= 
= 
( multiply both sides by 3 )
6 = k
y = 
← equation of proportion
When x = 15 , then
y = 
= 
= 
= 
= 1.5
