(13+49)-(13-135+49)
= 13 + 49 - 13 +135 - 49
=135
(18+29)+(158-18-29)
=18+29+158-18-29
=158
4.5²-3.(24-9)
= 4.25-3.24-9
=19
[93-(20-7)]:16
=93-20+7:16
=73,4375

\(\left(13+49\right)-\left(13-135+49\right)\)

\(=13+49-13+135-49\)

\(=135\)

\(\left(18+29\right)+\left(158-18-29\right)\)

\(=18+29+158-18-29\)

\(=158\)

\(4.5^2-3.\left(24-9\right)\)

\(=4.25-3.24+3.9\)

\(=100-72+27\)

\(=28+27\)

\(=55\)

\(\left\{93-\left(20-7\right)\right\}:16\)

\(=\left(93-20+7\right):16\)

\(=\left(73+7\right):16\)

\(=80:16\)

\(=5\)

(13+49)-(13-135+19)

=13+49-13-135+19

=13-13+49-19+135

=0+30+135

=165

(18+29)+(158-18-29)

=18+29+158-18-29

=18-18+29-29+158

=0+0+158

=158

4.5²-3.(24-9)

=4.5²-3.24-9

=4.25-3.24-9

=100-72-9

=19

[93-(20-7)]:16

=93-20-7:16

=93-20-0.4375

=72,5625

\(a,\left(13+49\right)-\left(13-135\right)\)

= \(13+49-13+135\)

= \(13-13+49+135\)

= \(184\)

\(b,\left(18+29\right)+\left(158-18-29\right)\)

= \(18+29+158-18-29\)

= \(158\)

\(c,4.5^2-3.\left(24-9\right)\)

= \(4.25-\left(72-27\right)\)

= \(100.-45\)

= \(55\)

\(d,\left[93-\left(20-7\right)\right]:16\)

= \(\frac{93-20+7}{16}\)

= \(\frac{80}{16}\)

= \(5\)

a) Bỏ ngoặc ta có biểu thức sau :

18 + 29 + 158 - 29 - 18 

= ( 18 - 18 ) + ( 29 - 29 ) + 158 

= 0 + 0 + 158

= 158

b) Bỏ dấu ngoặc ta có biểu thức sau :

13 - 135 + 49 - 13 + 49

= ( 13 - 13 ) + 135 + ( 49 - 49 )

= 0 + 135 + 0 

= 135

a) 18+29+158-29-18=158

b)13-135+49-13-49=-135

tick nha bạn

a)(18+29)+(158-29-18)=18+29+158-29-18=(18-18)+(29-29)+158=0+0+158=158

b)(13-135+49)-(13+49)=13-135+49-13-49=(13-13)+(49-49)-135=0+0-135=-135

a) 18 + 29 - 158 - 29 - 18 = -158

b) 13 - 135 + 49 - 13 - 49 = -136

tick nha

a) =18+29+158-29-18=18-18+29-29+158=0+0+158=158

b) =13-135+49-13-49=13-13+49-49-135=0+0-135=-135

Tick nha

a) 18 +29 + 158 - 18 - 29
b) 13-135+49+13-49
rồi tính đi

tick mik nha

a,(18+29)+(158-29-18)= 18+29+158-29-18= 158

b,(13-135+49)-(13+49)= 13-135+49-13-49= -135

a) (18+29)+(158-29-18)

= (18+(-18)) + (29+(-29)) + 158

=      0         +      0        + 158

=                    158

b) (13-135+49) - (13+49)

=(13+(-13)) + (49+(-49)) + 135

=    0         +      0        + 135

                      135

    Mình không chắc lắm nhưng mình chỉ làm theo ý mình thôi , nếu đúng bạn cứ sử dụng nếu sai thì thôi coi như bạn góp ý 

( 18+29 ) + ( 158-28-18) 

=18+29+158-28-18

=29 + ( 18-18) + ( 158-28)

=29+0+130=159

(13-135+49)-(13+49)

=13-135+49-13-49

=(13-13)+(49-49)-135

=0+0+(-135)

=-135