tim x
[x-128+20] : 192= 0
x:15 +42 = 13 + 25 =0
460 +85 . 4 = [ x + 200 ] . 4
Tìm x biết:
a) x - 280 : 35 = 5.54
b) (x - 280) : 35 = 56 : 5
c) x : 15 + 42 = 13 + 25.8
d) (x - 128 + 20) : 192 = 0
e) 460 + 85.4 = (x + 200).4
f) x + 5.2 - ( 32 + 16.3 : 16 - 15) = 0
GIÚP MÌNH NHA!
( x - 280 ) : 35 = 56 . 5
( x - 128 + 20 ) : 192 = 0
460 + 85 . 4 = ( x + 200 ) . 4
x + 5 . 2 - ( 32 + 16 . 3 : 16 - 15 ) = 0
1)\(\left(x-280\right):35=56.5\)
\(\left(x-280\right):35=280\)
\(x-280=280.35\)
\(x-280=9800\)
\(x=9800+280\)
\(x=10080\)
2) \(\left(x-128+20\right):192=0\)
\(\Rightarrow\left(x-148\right):192=0\)
\(\Rightarrow x-148=0\)
\(\Rightarrow x=0+148\)
\(\Rightarrow x=148\)
3) \(460+85.4=\left(x+200\right).4\)
\(\Rightarrow\left(x+200\right).4=460+340\)
\(\Rightarrow\left(x+200\right).4=800\)
\(\Rightarrow x+200=800:4=200\)
\(\Rightarrow x+200=200\)
\(\Rightarrow x=200-200=0\)
4) \(x+5.2-\left(32+16.3:16-15\right)=0\)
\(\Rightarrow x+10-\left(32+3-15\right)=0\)
\(\Rightarrow x+10-20=0\)
\(\Rightarrow x+10=20\)
\(\Rightarrow x=20-10=10\)
nha m.n
a) x-280;35=5.54
b) (x-280);35=56;5
c)x;15+42=13+25.8
d) (x-128+20);192=0
e) 460+85.4=(x+200).4
g) x+5.2-(32+16.3;16-15)=0
h) 2448;[119-(x-6)]=24
i) 20-[7.(x-3)+4]=2
k) x;[(1800+600);30]=560;(315-35)
l) [(1250-25);15];x=(450-60);130
Ai giải nhanh nhất mình tick cho
460 + 86 . 4 = { x + 200} .4 tim x :
{x- 128 + 20 } : 192 =0
3x- 8064 + x =0
{x+1} {3 - x } {2x + 8 } =0
25+{15 . x} = 30
460 + 86 . 4 = { x + 200 } . 4
460 + 344 = { x + 200 } : 4
804 = { x + 200 } . 4
x = 200 = 804 : 4
x + 200 = 201
x = 201 - 200
x = 1
a) 460 + 86 . 4 = { x + 200 } . 4
460 + 344 = { x + 200 } . 4
804 = { x + 200 } . 4
x + 200 = 804 : 4
x + 200 = 201
x = 1
b) { x - 128 + 20 } : 192 = 0
{ x - 148 } = 0 . 192
x - 148 = 0
x = 148
c) 3x- 8064 + x = 0
4x - 8064 = 0
4x = 8064
x = 2016
d) ( x + 1 ) ( 3 - x ) ( 2x + 8 ) = 0
\(\Rightarrow\hept{\begin{cases}x+1=0\\3-x=0\\2x+8=0\end{cases}}\)
\(\Rightarrow\hept{\begin{cases}x=0-1\\x=3-0\\2x=-8\end{cases}}\Rightarrow\hept{\begin{cases}x=-1\\x=3\\x=-4\end{cases}}\)
e) 25 + ( 15 . x ) = 30
15 . x = 5
x = 5 : 15
x = 5/15 = 1/3
bài 1: tìm x
a, ( x : 23 + 45 ) . 67 = 8911 b, x - 280 : 35 = 5 . 54
c, ( x - 128 + 20 ) : 192 = 0 d, 460 + 85 . 4 = ( x + 200 ) . 4
e, x : 15 + 42 = 13 + 25 .8 f, x + 5 . 2 - ( 32 + 16 . 3 : 16 - 15) = 0
g, ( x - 280 ) : 35 = 55 : 5
Ai làm nhanh mình tik, giải rõ giúp mình, mình đang cần gấp , cảm ơn
nhóm nhạc Forever BTS đấy à bn
k bn nha
mk cùng là phan của nhóm đó
a) (x/23+45) =8911/67
(x/23+45) =113
x/23=113-45
x/23=68
x=68*23
x=1564
b) x - 280 : 35 = 5.54
x - 8 = 270
x = 278
c) ( x - 128 + 20) : 192 = 0
x - 128 + 20 = 0
x - (128-20) = 0
x - 108 = 0
x = 108
d) 460 + 85.4 = (x+200).4
=> (x+200).4 = 800
x+200 = 200
x = 0
a) 460 + 85 . 4 = ( x + 200 ) : 4
x = ?
b) x : 15 + 42 = 15 + 25 . 8
x = ?
c) x - 32 : 16 = 48
x = ?
d) x - 6 : 2 - ( 48 - 24 . 2 : 6 - 3 ) = 0
x = ?
a) 460 + 85.4 = ( x + 200 ) : 4
=> x = 3000
b) => x = 2595
c) => x = 50
d) => x = 40
a)460 +85 . 4 = (x+200) :4 b)x:15+42=15+25.8
suy ra : 460+340=(x+200):4 suy ra: x:15+42=15+200
suy ra: 800= (x+200):4 suy ra : x:15+42=215
suy ra : 800.4=x+200 suy ra: x:15=215-42
suy ra : 3200=x+200 suy ra : x:15=173
suy ra: x= 3200-200 suy ra : x=173.15
suy ra : x=3000 vậy x =3000 suy ra: x=2595 vậy x = 2595
c) x-32:16=48 d)x-6:2-(48-24.2:6-3)=0
suy ra :x-2=48 suy ra : x-6:2-(48-48:6-3)=0
suy ra :x=48+2 suy ra : x-6:2-(48-8-3)=0
suy ra : x=50 suy ra : x-6:2-(40-3)=0
vậy x=50 suy ra : x-6:2 - 37=0
suy ra : x-3-37=0
suy ra : x-3=0+37
suy ra : x-3=37
suy ra : x=37+3
suy ra :x=40 vậy x= 40
X-7 = -5 (x+2) = 0 (3x - 24) . 73 =2.74 | x - 5 | = |-7| x- [42 + ( -28) = -8 ( 7x - x ) - ( 25+7 ) = -25 |x-3| = |5| + | -7 | ( x : 3-4 ) : 5 =15 | x -3 | = 7 - (-2) 128 -3 . (x+4) = 23 4 - ( 7-x ) = x - (13-4 ) BÀI 2 : TÍNH NHANH S1 = 1+2+3+.......999 S1= 10 +12 + 14 +.......2010 S3 + 21 + 23 + 25 + .......10001
a) 460 + 85 . 4 = ( x + 200 ) : 4
x = ?
b) x : 15 + 42 = 15 + 25 . 8
x = ?
c) x - 32 : 16 = 48
x = ?
d) x - 6 : 2 - ( 48 - 24 . 2 : 6 -3 ) = 0
x = ?
a, 460 + 85 . 4 = ( x + 200 ) : 4
460 + 340 = ( x + 200 ) : 4
( x + 200 ) : 4 = 800
x + 200 = 800 . 4 = 3200
x = 3200 - 200
x = 3000
tim x biet [(4/20/21-5):(41/42-1):...:(63/64-1)].x=-128
Khó quá thì nên hoc24 .vn
Nếu đúng thì ấnĐúng 2 không những thees sau khi ấn sẽ may mắn cả năm