\(\left(100+42\right).42+\left(200-58\right).58\)

\(=142.42+142.58\)

\(=142.\left(42+58\right)\)

\(=142.100\)

\(=14200\)

k nha

Kết quả = 14200 nha

( 100 + 42 ) x 42 + ( 200 - 58 ) x 58

= 142 x 42 + 142 x 58

= 142 x ( 42 + 58 )

= 142 x 100

= 14200

(100+42) x42+(200-58)x58

=142x42+142x58

=142x(42+58)

=142x100

=14200

\(\left(100+42\right)\times42+\left(200-58\right)\times58\)

\(=142\times42+142\times58\)

\(=142\times\left(42+58\right)\)

\(=142\times100=14200\)

142 x 42 + 142 x 58

= 142 x (42 +58)

=142 X 100

=14200

K NHÉ +kb

(100 + 42 ) x 42 + ( 200 - 58 ) x 58 

= 142 x 42 + 142 x 58

= 142 x ( 42 + 58 )

= 142 x 100

= 14200

( 100 + 42 ) x 42 + ( 200 - 58 ) x 58

= 142 x 42 + 142 x 58

= 142 x ( 42 + 58 )

= 142 x 100

= 14200

(100 + 42 ) x 42 + ( 200 - 58 ) x 58 

= 142 x 42 + 142 x 58

= 142 x ( 42 + 58 )

= 14 200

Mong các bạn ủng hộ nha !!!! Ai đi qua xin để lại 1 k nhaaaa !!!

Làm ơn hãy k mk nhé !! 

(100 + 42).42 + (200 - 58).58

= 142.42 + 142.58

= 142.(42 + 58)

= 142.100

= 14200

=14200 NHA BN

[100 + 42].42 + [200 - 58].58

= 142 . 42 + 142 . 58

= 142 . (42 + 58)

= 142 . 100

= 14200

a) 1,75 : 0,25 + 1,75 : 0,5 + 1,75 : 0,25
= 1, 75 : \(\dfrac{1}{4}\) + 1,75 : \(\dfrac{1}{2}\) + 1,75 : \(\dfrac{1}{4}\)
= 1,75 x 4 + 1,75 x 2 + 1,75 x 4
= 1,75 x (4 + 2 + 4)
= 1,75 x 10
= 17,5

b) 26,3 x 101 - 26 - 0,3
= 26,3 x 101 - (26 + 0,3)
= 26,3 x 101 - 26,3 x 1
= 26,3 x (101 - 1)
= 26,3 x 100
= 2630

c) (200 - 58) x 42 + (100 + 42) x 58
= 142 x 42 + 142 x 58
= 142 x (42 + 58)
= 142 x 100
= 14200

12,7 + 12,7 + 12,7 + 12,7 x 8 - 12,7

= 12,7 x (1 + 1 + 1 + 8 - 1)

= 12,7 x 10

= 127

(100 + 42) x 42 + (200 - 58) x 58

= 142 x 42 + 142 x 58 

= 142 x (42 x 58)

= 142 x 100

= 14200

a.

12,7 + 12,7 + 12,7 + 12,7 x 8 - 12,7

= 12,7 x ( 1 + 1 + 1 + 8 - 1 )

= 12,7 x 10

= 127

b.

( 100 + 42 ) x 42 + ( 200 - 58 ) x 58

= 142 x 42 + 142 x 58

= 142 x ( 42 + 58 )

= 142 x 100

= 14200

lam trong ngoac trc ngoai ngoac sau de ma

\(\left(100+58\right)\times58+\left(200-42\right)\times12\)

\(=158\times58+158\times12\)

\(=158\times\left(58+12\right)\)

\(=158\times70=11060\)

\(128\times72+14\times256\)

\(=128\times72+14\times2\times128\)

\(=128\times\left(72+28\right)\)

\(=128\times100=12800\)

\(157\times99+123+34\)

\(=157\times99+157\times1\)

\(=157\times\left(99+1\right)\)

\(=157\times100=15700\)

\(67+98\times45+23\)

\(=98\times45+90\)

\(=98\times45+45\times2\)

\(=45\times\left(98+2\right)\)

\(=45\times100=4500\)