The sum of two numbers is 9and their difference is 1
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x + y = 9. (1)
x - y = 1. (2)
add (1) & (2)
we will get
2x = 10
x = 10/2
x = 5
substitute x = 5 in (1)
x + y = 9
5 + y = 9
y = 9 - 5
y = 4
x - y = 1. (2)
add (1) & (2)
we will get
2x = 10
x = 10/2
x = 5
substitute x = 5 in (1)
x + y = 9
5 + y = 9
y = 9 - 5
y = 4
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