2 अपॉन 3 ऑफ a नंबर इज less than the ओरिजिनल नंबर by 20 फाइंड द नंबर
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Step-by-step explanation:
let the original no. be x
2/3x-x=20
2/2x=20
2x=20*2
2x=22
x=22/2
:. x=11
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