166.(-127+234)-234.(166+127)

= 166.(-127)+166.234-234.166-234.127

=[166.(-127)-234.127]+(166.234-234.166)

=(-127).(166+234)+0

=(-127).400

=-50800

Trl :

166×(-127+234)-234×(166+127)

=166*(-127)+166*234-234*166+234*127

=[166*234-234*166]+[166*(-127)+234*127]

=[166*(234-234)]+[(-166)*127+234*127]

=(166*0)+[127*(-166+234)]

=0+127*68

=127*68

=8636

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#moon

Lời giải:
$234+28-(-234)+(-108)+120=234+28+234-108+120$

$=234.2-(108-28)+120$

$=468-80+120=468+40=508$
----------

$625-(127-56)+(144-625)=625-127+56+144-625$

$=(625-625)+(144+56)-127$

$=0+200-127=73$

234 + 28 - ( -234 ) + ( -108 ) + 120=234+28+234-108+120

=234+(108+120)-28=234+(228-28)

=234+200=434

625 - ( 127 - 56 ) + ( 144 - 625 )=625-127+56+144-625

=127+(625-625)+(144+56)=127+0+200

=127+200=327

Cho mk xin lỗi bài mk sai nha bn

234 x 98 + 234 x 5

= 234 x ( 98 + 5 )

= 234 x 103

= 24 102 

~ Ủng hộ nhé ~

234 x 98 + 234 x 5

= 234 x (98 + 5)

= 234 x 103

= 24102

= 24102

1536+3645x234:2+254-234x3

=1536+426465+254-702

=428001+254-702

=428255-702

=427553

=-425377

=427553

234+234=468

1234-234=1000

99+1=100

234 + 234 = 468

1234 - 234 = 1000

99 - 1 = 98

234+234=468

1234-234=1000

a) 345 - ( 345 + 77 ) - ( 77 +  23 )

= 345 - 345 - 77  -  77 -  23 

= (345-345) - (77+23) - 77

= 0 - 100 - 77

= -100 - 77

= -177

b) 234 + ( 433 - 234 )

= 234 + 433 - 234

= (234-234) + 433

= 0 + 433

= 433

a) 345 - ( 345 + 77 ) - ( 77 +  23 )

= 345 - 345 - 77 - 77 + 23 = -77 - 77 + 23

= -77.2 + 23

= -154 + 23

= -131

b) 234 + (433 - 234) 

= 234 + 433 - 234

= (234 - 234) + 433

= 0 + 433

= 433

a, 345 - ( 345 + 77 ) - ( 77 + 23 )

= 345 - 345 - 77 - 77 - 23

= - 23

b, 234 + ( 433 - 234 )

= 234 + 433 - 234

= ( 234 - 234 ) + 433

= 433

a) 166.(-127)+166.234+(-234).166-234.127

  166.(-234+234)+127.(-166-234)

=0+127.(-400)

=-50800

b) 53.39+43.39-53.21-47.21

=39.(53+43)+(-21).(53+47)

=39.96+(-21).100

=-1644

k cho minh

234-117+(-100)+(-234)

=234+(-117)+(-100)+(-234)

=[234+(-234]+(-100)+(-117)

=0+(-100)+(-117)

=-217

(-927)+1421+930+(-1421)

=[(-1421)+1421]+[(-927)+930]

=0+3

=3

\(7313-234-66\)
\(=7313-\left(234+66\right)\)
\(=7313-300\)
\(=7013\)

234×17+117×66