Question 1033016
Hi there,
Two numbers that when subtracted 
are equal to fourteen.
x - y = 14........(1)
x = 14 + y........(1)
when doubled are equal to 130
2x + 2y = 130.....(2)
Substitute (14 + y) for x
in Eq(2)
2x + 2y = 130.....(2)
2(14 + y) + 2y = 130
28 + 2y + 2y = 130
Collect like terms:
2y + 2y = 130 - 28
4y = 102
y = 25 1/2
Substitute y = 25 1/2
into Eq(1)
x - 25 1/2 = 14
x = 14 + 25 1/2
x = 39 1/2
x = 39 1/2
y = 25 1/2
Hope this helps :-)