নিচের অপশন গুলা দেখুন
56 - x /x = x%
56 - x / x = x/100
5600 - 100x = x2
x2 + 100x - 5600 = 0
x2 + 140x - 40x - 5600 = 0
( x - 40) ( x + 140) = 0
x = 40
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