( 5 x 6 + 7 - 37 ) x ( 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 )
= ( 30 + 7 - 37 ) x ( 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 )
= 37 - 37 x ( 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 )
= 0 x 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10
= 0
( 5 x 6 + 7 - 37 ) x ( 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 )
= 0 x ( 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 )
= 0
(5 x 6+7-37) x (1+2+3+4+........+10)
=(30+7-37) x (1+2+3+.......+10)
=(37-37) x (1+2+3+........+10)
=0 x (1+2+3+.........+10)
=0
(5 x 6+7-37) x (1+2+3+4+........+10)
=(30+7-37) x (1+2+3+.......+10)
=(37-37) x (1+2+3+........+10)
=0 x (1+2+3+.........+10)
=0
Bai cua Forever miss you đúng rùi