\(a,\left(37-17\right).\left(-5\right)+23.\left(13-17\right)\)

\(=20.\left(-5\right)+23.\left(-4\right)\)

\(=-100-92\)

\(=-192\)

\(b,\left(-57\right).\left(67-34\right)-67\left(34-57\right)\)

\(=\left(-57\right).33-67.\left(-23\right)\)

\(=-1881+1541\)

\(=-340\)

a) 20.(-5)+23.(-30)

=-100+(-690)

=-790

b)(-57).33-67.(-23)

=-1881-(-1541)

=-340

a, (37-17). (-5) +23 . (-13-17)

=20. (-5) +23. (-30)

= -100-690

= -790

b,(-57) . (67-34)-67.(34-57)

=(-57).33-67 .(-23)

= -1881 + 1541

= -340

a, ( 37 - 17 ) . ( -5 ) + 23 . ( -13 - 17 )                              b, ( -57 ) . ( 67 - 34 ) - 67 . (34 -57 )

= 20 . ( -5 ) + 23 . 4                                                          =-57 . 69 + 57 . 34 - 67 . 34 + 67 . 57 

= -100 + (-690 )                                                               = 57 . 34 - 67 . 34

= -790                                                                            = 34 . ( 57 - 67 )

                                                                                     = 34 . ( -10 )

                                                                                    = -340

nho k cho minh nhieu nha

a là -790

b là -340

a)(37-17).(-5)+23.(-13-17)=-790

b)(-57).(67-34)-67.(34-57)=-340

tk mình nha

a. = 20 x (-5) + 23 x (-30)

    = -100 - 690

    = -790

b. (-57) x 33 - 67 x (-23)

= -1881 + 1541

= -340

a. (37-17)*(-5)+23*(-13 -17)

= 20*(-5)+23*(-30)

= (-100)+-(-690)

=(-790)

b. (-57)*(67-34)-67*(34-57)

=(-57)*33-67*(-23)

=(-1181)-(-1541)

=360

a, 20.(-5)+23.(-30)

=(-100)+(-30)

=(-130)

a) (37-17).(-5) +23. (-13-17) = 20 . (-5) +23 . (-20)

= (-20).(-5-23)

= (-20).(-28)

= 560

b) (-57).(67-34)-67.(34-57) = -57.67+57.34-67.34+67.57

= (-57.67+67.57)+(57-67).34

= 0+(-10).34

=-340

(37-17).(-5)+23.(-13-17)