bo ngoac roi tinh:-(21+32)-(-12+32)
-(21+32)-(-12+32) bo ngoac roi tinh
-(21+32)-(-12+32)
= - 21 - 32 + 12 - 32
= ( - 21 + 12 ) + ( - 32 - 32 )
= - 9 - 62
= - 71
!!! k chắc
-(21+32)-(-12+32)
=-21-32-(-12)-32
=-21+(-32)+12+(-32)
=-21+12+(-32)+(-32)
=(-9)+(-64)=(-73)
Chúc bn học tốt
(− 21 − 32) − (−12 + 32)
= −21 + 32 + 12 − 32
= −21 + 12 + 32 − 32
= −9 + 0
= −9
nhớ k cho mình nha'
học tốt
32-(2² . 3,14) - (2² . 3,14) = ?
Bo ngoac roi tinh
Ai giup voi
\(32-\left(2^2.3,14\right)-\left(2^2.3,14\right)\)
\(=32-2\left(2^2.3,14\right)\)
\(=32-2.2^2.3,14\)
\(=32-12,56\)
\(=19,44\)
\(32-\left(2^2.3,14\right)-\left(2^2.3,14\right)\)
\(=32-12,56-12,56\)
\(=19,44-12,56\)
\(=6,88\)
HOK TOT
Bo dau ngoac roi tinh
10-[12-(-9-1)]
10 - [12 - (-9 - 1)]
= 10 - 12 + (-9) - 1
= (-2) + (-9) - 1
= (-11) - 1
= (-12)
10-12+9+1
=-2+9+1
=7+1
=8
10-[12-(-9-1)]
=10-12-9-1
=-2-9-1
=-12
7,1+(-5,25)-(-2,25+7,1)
Bo ngoac roi tinh
\(7,1+\left(-5,25\right)-\left(-2,25+7,1\right)\)
\(=7,1-5,25+2,25-7,1\)
\(=\left(7,1-7,1\right)-\left(5,25-2,25\right)\)
\(=0+3\)
\(=3\)
Ủng hộ mk nha ^_-
Bo ngoac roi tinh
(2.17,5-2015)-(-2015+17,5.2)-14
(2 * 17,5 - 2015) - (-2015+ 17,5 *2) -14
= 2*17,5 - 2015 +2015 - 17,5 *2 -14
=0-14
=-14
Bo ngoac roi tinh nhanh
( 18 + 29 ) + ( 158 - 18 - 29 )
18+29+158-18-29
=(18-18)+(29-29)+
=158
bo dau ngoac roi tinh phan a 125-4 .[3-7.(-2)]
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Bo dau ngoac roi tinh :
-144 - [29 - (+144) - (-149)]
-144-[29-144+149]
=-144-29+144-149
=(-144+144)+(-29-149)
= 0 + (-178)
=-178
-7264+[1543+7264]
bo ngoac roi tinh cac ban nha
-7264 + [1543 + 7264]
= -7264 + 1543 + 7264
= (7264 - 7264) + 1543
= 0 + 1543
= 1543
mik nhah nhất đó
-7264+[1543+7264]=1543
AI K MÌNH K LẠI MÌNH ĐANG BỊ ÂM RẤT NHIỀU HUUHUHUHHUUHU