Answer:
5.5, 9.5
Step-by-step explanation:
Let x and y be the numbers
x+y = 15
x-y = 4
Add the two equations together to eliminate y
x+y = 15
x-y = 4
------------------
2x = 19
Divide by 2
2x/2 =19/2
x = 9.5
Now find y
x+y = 15
9.5+y = 15
Subtract 9.5
x = 15-9.5
x =5.5
Step-by-step explanation:
D I think sorry if it's wrong :(
Not sure if this is exactly what you want but an= a1 + (n - 1)d
it is either 5 cm or its 4 cm
