6 nhan (x+ 9845)= 29042 nhan 6
(x chia 3) nhan 8 =8 nhan 3198
bai 3 : tim x
6 nhan ( x+9845 ) = 29042 nhan 6
(x chia 3) nhan 8 = 8 nhan 3198
bai 7 : tim x
191+ x + 9 = 43 nhan 5
x nhan 25 nhan 4 = 125 nhan 8
bai 8 : tim x
128 nhan x - 12 nhan x - 16 nhan x = 5208000
x nhan 27 + x nhan 30 + x nhan 43 =210500
Lời giải đầy đủ:
Bài 3:tìm x
A,
6.(x+9845)=29042.6
(x+9845)=29042.6:6
x+9845=29042
x=29042-9845
x=19197.
B,
(x:3).8=8.3198
(x:3)=3198.8:8
x:3=3198
x=3198.3
x=9594.
Bài 7:
A/191+x+9=43.5
200+x=215
x=215-200
x=15.
B/x.25.4=125.8
x.100=1000
x=1000:100
x=10.
Bài 8:
A/ 128.x-12.x-16.x=5208000
(128-12-16).x=5208000
100.x=5208000
x=5208000:100
x=52080.
B/ x.27+x.30+x.43=210500
x.(27+30+43)=210500
x.100=210500
x=210500:100
x=2105.
K mình nhé!
tim x
6*(x+ 9845)=29042*6
(:3)*8=8*3198
ai nhanh tick cho
a) 6*(x+ 9845) = 29042*6
6*(x + 9845) = 174252
x + 9845 = 174252
x = 174252 - 9845
x = 164407
b) (x:3)*8= 8 * 3198
x:3 *8= 25584
x:3 = 25584:8
x:3 = 3198
x = 3198*3
x = 9594
a,
6.(x+9845)=29042.6
x+9845=29042
x=29042-9845
x=19197
b,
(x:3).8=8.3198
x:3=3198
x=3198.3
x=9594
[X nhan 7 cong 8 ] chia 5 = 10
280 chia [7 cong 3 nhan X] = 4
[ X nhan 5] nhan 19 chia 13= 57
6 nhan [28 - 8] nhan X ] = 72
4 nhan [ 36 - 4 nhan X] = 3,2
[X - 15] nhan 3 chia 12 =6
[ X chia 4 cong 6] nhan 7=70
[ X chia 2 cong 50] chia 5=12
5 nhan [ 7 cong 3 nhan X] = 140
help me ////\\\\\
tim X nha mn jup mk ik mk dg voi lam
a) (x.7 +8):5=10
x.7 +8= 10.5=50
x.7= 50-8=42
x= 42:7=6
b) 280: (7+3.x)=4
7+3.x= 4.280= 1120
3.x= 1120-7 =1113
x= 1113: 3= 371
c) (x.5) .19:13= 57
(x.5). 19= 57.13= 741
x.5= 741: 19= 39
x= 39:5 =7,8
d) 6.(28-8).x = 72
20.x= 72:6= 12
x= 12: 20= 0,6
e) 4. (36-4.x)= 3,2
36-4.x= 32:4= 0,8
-4.x= 0,8- 36= -35,2
x= -35,2 : -4 = 8,8
f) (x-15).3 :12= 6
(x-15).3 = 6. 12= 72
x-15= 72: 3= 24
x= 24+ 15= 39
g) (x:4+ 6) . 7 = 70
x:4+6= 70:7= 10
x:4= 10-6= 4
x= 4.4 = 16
h) (x:2+50) :5= 12
x:2+ 50= 12.5= 60
x:2= 60-50= 10
x= 10.2=20
l) 5.(7+3.x)= 140
7+3.x= 140:5 = 28
3.x= 28-7 =21
x= 21: 3= 7
k cho mình nhe
6 x ( y + 9845 ) = 29042 x 6
y =
( x : 3 ) x 8 = 8 x 3198
x =
\(6\times\left(y+9845\right)=29042\times6\)
\(y+9845\) \(=29042\times6\div6\)
\(y+9845\) \(=29042\)
\(y\) \(=29042-9845\)
\(y\) \(=19197\)
\(\left(x\div3\right)\times8=8\times3198\)
\(x\div3\) \(=8\times3198\div8\)
\(x\div3\) \(=3198\)
\(x\) \(=3198\times3\)
\(x\) \(=9594\)
Bài 21 : tìm ý bằng cách dựa vào tính chất của phép nhân :
A) (y: 3) x 8 = 8 x 3198
B) y x (y+ 9845 ) =29042 x 6
tinh nhanh
1/10 nhan 2/9 nhan 3/8 nhan 4/7 nhan 5/6 nhan 6/5 nhan 7/4 nhan 8/3 nhan 9/ 2
1/10x(2/9x9/2)x(3/8x8/3)x(5/6x6/5)=1/10x1x1x1=1/10
7,2 chia 2,4 nhan X= 4,5
X nhan4,8 cong 5,2nhan X= 160
9,15nhan X cong 2,85 nhan X=48
[X nhan 3 cong 4 ] chia 5 =8
[15 nhan 28 - X] chia 2/5= 200 chia 0,4
7 nhan [8 cong 2 nhan X]= 210
X nhan 5,6 cong 4,4 nhan X= 130
[ X - 12] nhan 17 chia 11 = 51
9,15 nhan cong 2,85 nhan X= 48
tim X nha m.n
a ma cai nay mk rat voi nen nhanh jup mk nha
[......] cai nay la dau nghoach nha
1. . 7,2 : 2,4 x X = 4,5
3 x X = 4,5
X = 4,5 : 3
X = 1,5
2. X x 4,8 + 5,2 x X = 160
=> X x ( 5,2 + 4,8 ) = 160
X x 10 = 160
X = 160 : 10
X = 16
3. 9,15 x X + 2,85 x X =48
=> ( 9,15 + 2,85 ) x X = 48
12 x X = 48
X = 48 : 12
X = 4
4. ( X x 3 + 4 ) : 5 = 8
X x 3 + 4 = 8x 5
X x 3 + 4 = 40
X x 3 = 40 - 4
X x 3 = 36
X = 36 : 3
X = 12
5. ( 15 x 28 - x ) : 2/5 = 200 : 0,4
15 x 28 - x = 200 : 0,4 x 2/5
15 x 28 - x = 200
15 x 28 = 200 + x
420 = 200 + x
x = 420 - 200
x = 220
6. 7 x ( 8 + 2 x X ) = 210
8 + 2 x X = 210 : 7
8 + 2x = 30
=> 2x = 30 - 8
2x = 22
x= 22 : 2
x = 11
7. X x 5,6 + 4,4 x X = 130
X x ( 5,6 + 4,4 ) = 130
X x 10 = 130
X = 130 : 10
X = 13
8. ( x - 12 ) x 17 : 11 = 51
x - 12 = 51 x 11 : 17
x - 12 = 33
x = 33 + 12
x = 45
9. 9,15 x X + 2,85 x X = 48
X x ( 9,15 + 2,85 ) = 48
X x 10 = 48
X = 48 : 10
X = 4,8
cau nay ban lam sai
a, ( 11 nhan 9 - 100 + 1 ) : ( 1 nhan 2 nhan 3 nhan 4 nhan 5nhan 6 nhan 7 nhan 8 nhan 9 nhan 10)
a)(11*9-100+1):(1*2*3*4*5*6*7*8*9*10)
=0:(1*2*3*4*5*6*7*8*9*10)
=0
a)(11*9-100+1):(1*2*3*4*5*6*7*8*9*10)
=0:(1*2*3*4*5*6*7*8*9*10)
=0
hacker 2k6
[x-236 nhan 6 ]nhan 8 =936
[ x-236×6]×8=936-
x-236×6 =936:8
x-236×6. = 117