A = 1037 + { 743 - [ 1031 - ( + 57 ) ] }
= 1037 + 743 -1031 +57
= (1037 - 1031) + (743+57)
= 6 + 800 = 806
B = ( 125 . 73 - 125 . 75) : ( - 25 .2 )
= 125( 73 - 75) : (-25 .2 )
= 125 .- 2 : -25 . 2
= 125 : 25
= 5
A = 1037 + { 743 - [ 1031 - 57 ]}
A = 1037 + { 743 - 974 }
A = 1037 + ( - 231 )
A = 806
B = ( 125 x 73 - 125 x 75 ) : ( -25 x 2 )
B= [ 125 x ( 73 - 75 )] : ( -50 )
B = 125 x ( -2 ) : ( -50)
B = -250 : ( -50 )
B = 5