Thay m = 100
=>M = ( 100 - 75 ) x ( 52 x 45 + 52 + 52 x 54 )
= 25 x 5200
= 130000
b) Thay M = 10400
10400 = ( m - 75 ) x ( 52 x 45 + 52 + 52 x 54 )
( m - 75 ) = ( 52 x 45 + 52 + 52 x 54 ) : 10400
( m - 75 ) = 130000 : 10400
( m - 75 ) = 12,5
m = 12,5 + 75
m =87,5
Thay m = 100
Ta được : ( 100 - 75 ) x ( 52 x 45 + 52 + 52 x 54 )
= 25 x 5200
= 130000
b) Thay M = 10400
10400 = ( m - 75 ) x ( 52 x 45 + 52 + 52 x 54 )
( m - 75 ) = ( 52 x 45 + 52 + 52 x 54 ) : 10400
( m - 75 ) = 130000 : 10400
( m - 75 ) = 12,5
m = 12,5 + 75
m =87,5
Thay m = 100
Ta được : ( 100 - 75 ) x ( 52 x 45 + 52 + 52 x 54 )
= 25 x 5200
= 130000
b) Thay M = 10400
10400 = ( m - 75 ) x ( 52 x 45 + 52 + 52 x 54 )
( m - 75 ) = ( 52 x 45 + 52 + 52 x 54 ) : 10400
( m - 75 ) = 130000 : 10400
( m - 75 ) = 12,5
m = 12,5 + 75
m =87,5