Question

131 . ( x -37 ) = ( 2+ 4 + 6 + ... + 100 ) .(36 . 333 - 108 . 111 )

Answer 1

=> 131.( x - 37 ) = 0

=> x - 37 = 0 : 131

=> x - 37 = 0

=>       x  = 0 + 37

=>       x   = 37

Answer 2

131 . (x - 37) = ( 2 + 4 + 6 + ... + 100) . (36.333 - 108 .111)

=> 131 . (x - 37) = ( 2 + 4 + 6 + ... + 100) . (36.3.111 - 108 .111)

=> 131 . (x - 37) = ( 2 + 4 + 6 + ... + 100) . [111.(36.3 - 108)]

=> 131 . (x - 37) = ( 2 + 4 + 6 + ... + 100) . [111.0]

=> 131 . (x - 37) = 0

=> x - 37 = 0 . 131 = 0

=> x = 0 + 37 = 37

Vậy x = 37