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a)(13+49)-(13-135+49)
=13+49-13+135-49
=13-13+49-49+135
=0+0+135
=135
b)(18+29)+(158-18-29)
=18+29+158-18-29
=18-18+29-29+158
=0+0+158
=158
c)4 .52-3 .(24-9)
=4. 52- (3.24-3.9)
=4. 52-3.24+3.9
=4.25-72+27
=100-72+27
=28+27
=55
d)[93-(20-7)]:16
=(93-20+7):16
=80:16
=5
chúc cậu hok tốt
a) (13 + 49) - (13 - 135 + 49)
= 13 + 49 - 13 + 135 - 49
= (13 - 13) + (49 - 49) + 135
= 0 + 0 + 135
= 135
b) (18 + 29) + (158 - 18 - 29)
= 18 + 29 + 158 - 18 - 29
= (18 - 18) + (29 - 29) + 158
= 0 + 0 + 158
= 158
c) 4.52 -3.(24 - 9)
= 4.25 - 3.15
= 100 - 45
= 55
d) [93 - (20 - 7)] : 16
= [93 - 13] : 16
= 80 : 16
= 5
\(a,\left(13+49\right)-\left(13-135\right)\)
= \(13+49-13+135\)
= \(13-13+49+135\)
= \(184\)
\(b,\left(18+29\right)+\left(158-18-29\right)\)
= \(18+29+158-18-29\)
= \(158\)
\(c,4.5^2-3.\left(24-9\right)\)
= \(4.25-\left(72-27\right)\)
= \(100.-45\)
= \(55\)
\(d,\left[93-\left(20-7\right)\right]:16\)
= \(\frac{93-20+7}{16}\)
= \(\frac{80}{16}\)
= \(5\)
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)=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)+(158-29-18)= 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
\(a)(18+29)+(158-29-18)\)
\(=18+29+158-29-18\)
\(=18-18+29-29+158\)
\(=0+0+158=158\)
\(b)(13-135+49)-(13+49)\)
\(=13-135+49-13+49\)
\(=13-13+49-49-135\)
\(=0+0-135=-135\)
a, (18+29) +(158-18-29)
= 18+29+158-18-29
= (18-18) +(29-29)+ 158
= 158
b, (13-135+49)- (13+49)
= 13-135+49-13-49
= (13-13) +(49-49) -135
= 135
a, \(\left(18+29\right)+\left(158-18-29\right)\)
\(=18+29+158-18-29\)
\(=\left(18-18\right)+\left(29-29\right)+158\)
\(=158\)
b,
\(\left(13-135+49\right)-\left(13+49\right)\)
\(=13-135+49-13-49\)
= \(\left(13-13\right)+\left(49-49\right)-135\)
= \(-135\)
(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
\(\left(13+49\right)-\left(13-135+49\right)\)
\(=13+49-13+135-49\)
\(=135\)
\(\left(18+29\right)+\left(158-18-29\right)\)
\(=18+29+158-18-29\)
\(=158\)
\(4.5^2-3.\left(24-9\right)\)
\(=4.25-3.24+3.9\)
\(=100-72+27\)
\(=28+27\)
\(=55\)
\(\left\{93-\left(20-7\right)\right\}:16\)
\(=\left(93-20+7\right):16\)
\(=\left(73+7\right):16\)
\(=80:16\)
\(=5\)