TÍNH HỢP LÍ :
a) ( 425 - 325 ) * ( - 29 ) + 51 * ( - 43 + 57 )
b) ( - 34 ) * ( 69 - 25 ) - 44 * ( 77 - 11 )
c) 43 * ( 15 - 75 ) -60 * ( - 27 - 30 )
d) ( - 123 ) * 132 + 123 * 32 - 77
e) 49 * ( 25 - 71 ) - 54 * ( 1 - 52 )
HELP ME PLEASE , PLEASE , PLEASE , ...
dấu * là sao