a) \(\frac{29566}{435}\)

b) 888,8621648

1000+100+10+1

`a)145×16+145×83+123×22`

`=145xx(16+83)+123xx22`

`=145xx99+123xx22`

`=145xx9xx11+123xx2xx11`

`=1305xx11+246xx11`

`=(1305+246)xx11`

`=1551xx11`

`=`\(17061\)

`145 xx 16 + 145 xx 83 + 123 xx 22`

`=145 xx (16 +83) + 123xx 22`

`=145 xx 99+123xx22`

`=145 xx 9 xx 11+123 xx 21 xx 1`

` =  (1305+246) xx 11`

`=1551 xx 11 =17061`

765*123+145=94240

de bai thieu dieu kien ban a

152+163-123+256-145=303

=303 nhớ k cho mk nha

đáp số:423

123 + 145 + 234 + 23 - 35 - 67

= 268 + 234 + 23 - 35 - 67

= 502 + 23 - 35 - 67

= 525 - 35 - 67

= 490 - 67

= 423

đề bị sai

sai đề

  243 x 145 - 123

= 35235 - 123

= 35112

  165 x 45 - 112

= 6625 - 112

= 6513

243 x 145 - 123 = 35 112

165 x 45 - 112 = 7 313

   72: ( 107 - 99) + 5 \(\times\) ( 145 - 123)

= 72 : 8 + 5 \(\times\) 22

= 9 + 110

= 119 

72 : ( 107 - 99 ) + 5 \(\times\) (145 - 123)

72 : 8 + 5 \(\times\) 22

9 + 110

119

\(\times\)

a: \(145+43+\left(-145\right)+57\)

\(=\left(145-145\right)+\left(43+57\right)\)

=0+100

=100

b: \(\left(-123\right)+101+\left(-777\right)+99\)

\(=\left(-123-777\right)+\left(101+99\right)\)

=-900+200

=-700

c: \(\left(-8955\right)+33+\left(-45\right)+\left(-133\right)\)

\(=\left(-8955-45\right)+\left(33-133\right)\)

\(=\left(-9000\right)+\left(-100\right)=-9100\)

d: \(\left(-2\right)+\left(-4\right)+\left(-6\right)+\left(-8\right)+\left(-10\right)+8+10+12\)

\(=\left(12-2\right)+\left(-4-6\right)+\left(-8+8\right)+\left(-10+10\right)\)

=10-10+0+0

=0