the difference between two digit number positive integer is 75.
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8.let the present ages.of father be 'x' and son be 'y'.
Step-by-step explanation:
present age:x+y=53
four years ago:
x-4=4(y-4)
x-4=4y-16
simplify 1 and 2 eqtn..by any method
thus we get an answer .
x=40 y=13by-step explanation:
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