Tìm X
X : 8 x 32 + X : 3 x 18 - X : 5 x 10 = 120
Bài 1 : Tìm y :
y : 8 x 32 + y : 3 x 18 - y : 5 x 10 = 120
Từ đầu bài ta có: y x 4 + y x 6 - y x 2 = 120
y x (4 + 6 - 2) = 120
y x 8 = 120
y = 120 : 8
Vậy y = 15
y : 8 × 32 + y : 3 × 18 - y : 5 × 10 = 120
y × 4 + y × 6 - y × 2 = 120
y × ( 4 + 6 - 2) = 120
y × 8 = 120
y = 120 : 8
y = 15
Vậy y = 15
Các bạn giải hộ mk nhé
Tìm x : 8 nhân 32 + x : 3 nhân 18 - x : 5 nhân 10 = 120
Thank
tìm X
X : 8 x 32 + X : 3 x 18 - X : 5 x 10= 120
làm giúp mk đi
tick 2 cái
đừng nói là ko biết nha
ta se tinh nhu sau :
x : ( 8 + 3 - 10 ) * ( 32 + 18 - 10 ) = 120
x :1 * 40 = 120
x = 120 : 40 * 1
x = 30
mih hoc lop bon , neu sai thi gop y cho mih nha !! :))
kết quả là 15 nhưng mk ko biết cách 15 là mk mò hihi
tim X
a,( 25 * 12 - X - 25 ) : 25 = 4
b,180 - ( X + 15 ) : X * 20 = 100
c,125 + ( X - 25 ) * 5 + X = 150
d,X : 8 * 32 + X: 3 * 18 - X: 5 *10 = 120
d, X/8*32+X/3*18-X/5*10=120
X*32/8+X*18/3-X*10/5=120
32X/8+18X/3-10X/5=120
4X+6X-2X=120
8X=120
X=120/8
X=15
a, ( 25 * 12 - X - 25 ) : 25 = 4
( 25 * 12 - x - 25 ) = 4 * 25
( 25 * 12 - x - 25 ) = 100
300 - x - 25 = 100
300 - x = 100 + 25
300 - x = 125
x = 300 - 125
x = 175
1. x - 8 +32= 68
2. x +8+32=68
3. 98-x +34=43
4. 98+x-34=43
5. x :5:4=800
6. 18+x=384:8
7. (84,6-2 x x):3,02= 5,1
8. x x5= 120:6
9. (15x 24-x) :0,25= 100:0,25
1. \(x-8+32=68\)
\(x-8=68-32\)
\(x-8=36\)
\(x=36+8\)
\(x=44\)
_____
2. \(x+8+32=68\)
\(x+8=68-32\)
\(x+8=36\)
\(x=36-8\)
\(x=28\)
_____
3. \(98-x+34=43\)
\(98-x=43-34\)
\(98-x=9\)
\(x=98-9\)
\(x=89\)
_____
4. \(98+x-34=43\)
\(98+x=43+34\)
\(98+x=77\)
\(x=77-98\)
\(x=-21\)
_____
5. \(x:5:4=800\)
\(x:5=800.4\)
\(x:5=3200\)
\(x=3200.5\)
\(x=16000\)
_____
6. \(18+x=384:8\)
\(18+x=48\)
\(x=48-18\)
\(x=30\)
_____
7. \(\left(84,6-2\times x\right):3,02=5,1\)
\(84,6-2.x=5,1.3,02\)
\(84,6-2.x=15,402\)
\(2.x=84,6-15,402\)
\(2.x=69,198\)
\(x=69,198:2\)
\(x=34,599\)
_____
8. \(x\times5=120:6\)
\(x.5=20\)
\(x=20:5\)
\(x=4\)
_____
9. \(\left(15\times24-x\right):0,25=100:0,25\)
\(\left(15.24-x\right):0,25=400\)
\(15.24-x=400.0,25\)
\(15.24-x=100\)
\(360-x=100\)
\(x=360-100\)
\(x=260\)
1,x-8+32=68
=>x-8=68-32=36
=>x=36+8=42
2,x+8+32=68
=>x+8=68-32=36
=>x=36-8=28
3,98-x+34=43
=>98-x=43-34=9
=>x=98-9=89
4,98+x-34=43
=>98+x=43+34=77
=>x=77-98=-21
5,x:5:4=800
=>x:20=800
=>x=800x20=16000
6,18+x=384:8=48
=>x=48-18=30
7,(84,6-2x):3,02=5,1
=>84,6-2x=5,1x3,02=15,402
=>2x=84,6-15,402=69,198
=>x=69,198:2=34,599
8,5x=120:6=20
=>x=20:5=4
9,(15x24-x):0,25=100:0,25=400
=>360-x=400x0,25=100
=>x=360-100=260.
1. \(...\Rightarrow x+24=68\Rightarrow x=68-24=44\)
2. \(...\Rightarrow x+40=68\Rightarrow x=68-40=28\)
3. \(...\Rightarrow3^{2\left(8+x\right)}=9=3^2\Rightarrow2\left(8+x\right)=2\Rightarrow8+x=1\Rightarrow x=-7\)
4. \(...\Rightarrow3^{2\left(8+x\right)}=77\) (bạn xem lại đề)
5. \(...\Rightarrow x:5=800.4\Rightarrow x:5=3200\Rightarrow x=3200.5=16000\)
6. \(...\Rightarrow18+x=48\Rightarrow x=48-18=30\)
7. \(...\Rightarrow84,6-2x=5,1.3,02=15,402\Rightarrow2x=84,6-15,402\Rightarrow2x=69,198\Rightarrow x=34,599\)
8. \(...\Rightarrow5.x=20\Rightarrow x=20:5=4\)
9. \(\left(360-x\right):0,25=400\Rightarrow360-x=400.0,25=100\Rightarrow x=400-100=300\)
Tính bằng cách thuận tiện:
15 x 5 x 3 x (18 x 32 - 8 x 32 - 10 x 32)
15 x 5 x 3 x ( 18 x 32 - 8 x 32 - 10 x 32 )
= 15 x 5 x 3 x { 18 - 8 - 10 } x 32 }
= 15 x 5 x 3 x 0
= 0
Vì số nào nhân với 0 cx bằng 0
15 x 5 x 3 x ( 32 x (18-8-10)
15 x 5 x 3 x(32 x 0 )
15 x 5 x 3 0 = 0
h nha
15 x 5 x 3 x ( 18 x 32 - 8 x 32 - 10 x 32 )
= 15 x 5 x 3 x ( 0 x 32 )
= 15 x 5 x 3 x 0
= 0
TL
a) 5x + 20 = 110
<=> x = 90 : 5 = 18
b) x + 18 = - 13
<=> x = - 31
c) 120 - x = 50
<=> x = 70
d) 10 - x = -29
<=> x = 39
e) - x + 31 = 61
<=> x = -30
f) -85 - x = --70
<=> x = 15
Khi nào rảnh vào kênh H-EDITOR xem vid nha!!! Thanks!
Tìm x biet:
a,5/2x+x=32/15
b,x-7/2x=-32/15
c,-7/3x-7/4x+11/3=18/5
d,-5/6-3x=2/3
e,2x-5/9=-2/3
f,1/2-2/3x=7/12
g,7-|2x-3|=4
h,(19x+2.5^2):14=(13-8)^2-4^2
i,3/4x-2/3=2/7.1/6+5/7.1/6
k,(x+1/2).(2/3-2x)=0
l,x/2013-1/10-1/15-1/21-........-1/120=5/8
4.tìm x
a) x - 16 = - 18.
b) - x + 18 = 120
c) 9 - ( 32 - x ) = 100
d) 2 mũ x = 1024
e) 2 mũ 4 - x = 8 mũ 2