Thuc hien phep tinh :
-632 + ( -68) + ( -591) + 391
Tim x :
45 - | x+14 | = 23 . 3
Minh can gap, mong cac ban giup !
Những câu hỏi liên quan
cac ban giup toi cau nay voi:
Thuc hien phep tinh(hop ly neu co the):
(10/99+11/199-12/299)x(1/2-1/3+-1/6)
mong cac ban giup minh nhanh voi a. Minh xin cam on
\(\left(\frac{10}{99}+\frac{11}{199}-\frac{12}{299}\right)\times\left(\frac{1}{2}-\frac{1}{3}+-\frac{1}{6}\right)\)
\(=\left(\frac{10}{99}+\frac{11}{199}-\frac{12}{299}\right)\times\left(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\right)\)
\(=\left(\frac{10}{99}+\frac{11}{199}-\frac{12}{299}\right)\times\left(\frac{3}{6}-\frac{2}{6}-\frac{1}{6}\right)\)
\(=\left(\frac{10}{99}+\frac{11}{199}-\frac{12}{299}\right)\times0\)
\(=0\)
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Thuc hien phep tinh (Tinh nhanh neu co the)
18 x [ (3^4 x 24 + 3^4 - 27 x 3^4) - 71 x1^30 ] - 80
CAC BAN GIUP MINH VOI
Giup minh giai bai toan nay voi
Khong thuc hien phep tinh xet xem tich sau co tan cung bang chu so nao
a.2*12*22*32*...*2012
b.3*13*23*...*2013
c.4*14*24*...*2004
d.2*12*22*...*2020
Cac ban giai ro giup minh nha.Minh cam on
thuc hien phep tinh a) 4.52- 81 : 32 ( cac ban giup minh nhe)
-19-x=-20 ; x-45=-17 ; -32-(x-5)=0 , x+5=0 toi nay m can ket qua gap 4 phep tim x nay cac ban giai gap giup m nhe
-19 - x = -20
=> x = - 19 + 20
= x = 1
vậy_
chị lớp 6 mà... vậy
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-19 - x = -20
x = -19 + 20
x = 1
x - 45 = -17
x = -17 + 45
x = 28
-32 - ( x - 5 ) = 0
x - 5 = -32 - 0
x - 5 = -32
x = -32 + 5
x = -27
x + 5 = 0
x = 0 - 5
x = -5
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Xem thêm câu trả lời
Thuc hien phep tinh bang cach tinh nhanh :
a) 4/9 + 3/2 + 6/36.
b) 2/7 x 5/17 + 12/7 x 15/17.
c) 2,34 + 5,18 + 7,66.
d) 7/11 : 3/4 + 7/11 : 1/4.
GIUP MINH MINH DANG CAN GAP.
Thuc hien phep tinh
10-[120:3-2(132-117);2]
163-126:{150:3-320:[250-(120+15.6)
nhanh 9 tick giup ik mk can gap
\(10-\left[120:3-2\left(132-117\right):2\right]\)
\(=10-\left[120:3-2.15:2\right]\)
\(=10-\left[40-30:2\right]\)
\(=10-\left[40-15\right]\)
\(=10-25\)
\(=-15\)
\(163-136:\left\{150:3-320:\left[250-\left(120+15.6\right)\right]\right\}\)
\(163-126:\left\{150:3-320:\left[250-\left(120+90\right)\right]\right\}\)
\(163-126:\left\{150:3-320:\left[250-210\right]\right\}\)
\(163-126:\left\{150:3-320:40\right\}\)
\(163-126:\left\{50-8\right\}\)
\(163-126:42\)
\(163-3\)
\(160\)
hok tốt
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bai 1, thuc hien phep tru
a, (a-1)-(a-3)
b, (2+b)-(b+1)
c, -(1-2)+(5-c)
d, -(a-c)-(a-b+c)
bai 2, tim x, biet
a, -x+8= -17
b, 35-x=37
c, -19-x= -20
d, 2130-(x+130)+72= -64
giup minh voi, minh can gap, cam on cac ban nhieu
bài 1 :
a, (a-1 ) - (a-3) = a-1 -a+3= 2
b, (2+b) -( b +1) = 2+b - b - 1= 1
c, -(1-2) + ( 5 -c) = 6 -c
d, - ( a-c) - ( a-b +c) = b
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a, (a-1)-(a-3)
=a-1-a+3
=2
b, (2+b)-(b+1)
=2+b-b-1
=1
c, -(1-2)+(5-c)
=1+5-c
=6-c
d, -(a-c)-(a-b+c)
=-a+c-a+b-c
=-2a+b
bai 2, tim x, biet
a, -x+8= -17
-x=-17-8
-x=-25
x=25
b, 35-x=37
x=35-37
x=-2
c, -19-x= -20
-x=-20+19
-x=-1
x=1
d, 2130-(x+130)+72= -64
2175-(x+130)=-64
-(x+130)=-64-2175
-(x+130)=-2239
x+130=2239
x=2239-130
x=2109
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Bài 1: a, (a-1) - (a-3) = a-1-a+3 = 2
b, (2+b) - (b+1)= 2+b-b-1 =1
c,-(1-2) + (5-c) = -1+2+5-c = 6-c
d,-(a-c) - (a-b+c) = -a+c-a+b-c = -2a+b
Bài 2: a, -x + 8 = -17 => -x = -17- 8 = -25
b, 35 - x = 37 => x = 35 - 37 = -2
c, -19 - x = -20 => x = -19 + 20 = 1
d, 2130-(x+130)+72 = -64 => x+130 = 2130+64-72 = 2122 => x= 2122-130 =1992
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Tinh nhanh :
( -11 ) . 36 - 64 . 11
125 . ( -24 ) + 24 . 125
125 . ( -23 ) + 23 . 225
MINH CAN GAP !!!
mong cac ban giup, cam on !!!
1/ 11.(-36) - 64 . 11
= 11 ( -36-64)
= 11 x (-100) =-1100
2/ 125 x (-24+24)
= 125 x 0 =0
3/ -125 x 23 + 23 x 225
= 23 ( -125 + 225)
= 23 x 100 = 2300
(-11)(36+64)=-11.100=-1100
125(-24+24)=125.0=0
-23(125-225)=-23.(-100)=2300