Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(\left(42-69+17\right)-\left(42+17\right)=42-69+17-42-17=-69\)
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,
\(\left(13-135+49\right)-\left(13+49\right)\)
\(=13-135+49-13-49\)
= \(\left(13-13\right)+\left(49-49\right)-135\)
= \(-135\)
a)(−24).17+(−35).24+(−24).48
=(−24).17+35.(-24)+(−24).48
= (-24). (17+35+48)
=(-24) . 100
= -2400
b)145+(27−145)−100+27
=145+27−145−100+27
=(145-145)+(27+27) -100
=0 + 54 - 100
=-46
a) ( 27 + 65 ) + ( 346 - 27 - 65 )= 27+65 + 346-27-65 = 346
b) ( 42 - 69 + 17 ) - ( 42 + 17 )= 42-69+17 - 42-17= -69
a)(27+65)+(346-27-65)=27+65+346-27-65=(27-27)+(65-65)+346=0+0+346=346
b)(42-69+17)-(43+17)=42-69+17-42-17=(42-42)+(17-17)-69=0+0-69=-69
Tick cho mình nha bạn !!
(+27).(+5) = 135
(-27).(+5) = -135
(-27).(-5) = 135
(+5).(-27) = -135
a) (27+65)+(346-27-65)
= 27+65+346-27-65
= (27-27)+(65-65)+346
= 0 + 0 + 346
= 346
b) (42-69+17)-(42+17)
= 42-69+17 – 42 – 17
= (42-42)+(17-17)-69
= 0 + 0 – 69
= -69
a)(27+65)+(346-27-65)
=27+65+345-27-65
=(27-27)+(65-65)+346
=0+0+346
=346
b) (42-69+17)-(42+17)
=42-69+17-42-17
=(42-42)-69+(17-17)
=0-69+0
=-69
a)(27+65)+(346-27-65)
=27+65+346-27-65
=92+346-27-65
=438-27-65
=411-65
=346
b)(42-69+17)-(42+17)
=42-69+17-42+17
=-27+17-42+17
=-10-42+17
=-52+17
=-35
tôi ra kết quả khác cơ nhưng tôi vẫn tick đúng cho bạn
a)(27+65)+(346-27-65)=27+65+346-27-65=(27-27)+(65-65)+346=346
b)(42-69+17)-(42+17)=42-69+17-42-17=42+(-69)+17+(-42)+(-17)=42+(-42)+17+(-17)+(-69)=-69
a) (27+65)+(346-27-65)=27+65+346-27-65
=(27-27)+(65-65)+346=0+0+346=346
b) (42-69+17)-(42+17)=42-69+17-42-17
=(42-42)+(17-17)-69=0+0-69=-69
a) (27+65)+(346−27−65)
= (27-27)+(65-65)+346
= 0 + 0 +346
= 346
b) (42−69+17)−(42+17)
= (42-42)+(17-17)+69
= 0 + 0 + 69
= 69