Find two numbers whose sum is 80 and whose difference is 16.
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sum x+y=80.......{1}
x-y=16..........{2}
add 2 equation
2x=96
x=96/2
x=48
then substitute X in the equation 1 or equation 2
here i was taken equ 1
x+y=80
x=48
48+y=80
y=80-48
y=32
that numbers are 48 and 32
x-y=16..........{2}
add 2 equation
2x=96
x=96/2
x=48
then substitute X in the equation 1 or equation 2
here i was taken equ 1
x+y=80
x=48
48+y=80
y=80-48
y=32
that numbers are 48 and 32
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