19. LCM = 156, HCF = 26, A-B = 26 at A+B = ?
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Step-by-step explanation:
AB = 156×26
A = 26+B
(26+B)B = 4056
B²+26B -4056 =0
B²+78B-52B -4056 =0
B(B +78) -52(B +78) =0
(B -52)(B+78) =0
B =52, -78
B =52
A = 26+52 = 78
A+B = 78+52 = 130
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