tìm X. (X-2) x 3- 270 : 45 = 120
( X - 2 ) x 3 - 270 : 45 = 120
tìm X
( x - 2 ) . 3 - 270 : 45 = 120
( x - 2 ) . 3 - 6 = 120
( x - 2 ) . 3 = 120 + 6
( x - 2 ) . 3 = 126
x - 2 = 126 :3
x - 2 = 42
x = 42 + 2
x = 44
tìm X. (X-2) x 3- 270 : 45 = 120
\(\left(x-2\right).3-6=120\Leftrightarrow\left(x-2\right).3=126\Leftrightarrow x-2=42\Leftrightarrow x=44\)
Trả lời:
(x - 2) x 3 - 270 : 45 = 120
=> (x - 2) x 3 - 6 = 120
=> (x - 2) x 3 = 120 + 6
=> (x - 2) x 3 = 126
=> x - 2 = 126 : 3
=> x - 2 = 42
=> x = 42 + 2
=> x = 44
Tìm x:
a) (2009 - x) : 29 + 32 = 100.
b) (x - 2) x 3 - 270 : 45 = 120.
\(\left(2009-x\right):29+32=100\\ =>\left(2009-x\right):29=100-32=68\\ =>2009-x=68.29=1972\\ =>x=2009-1972=37\)
-
\(\left(x-2\right).3-270:45=120\\ =>3\left(x-2\right)-6=120\\ =>3\left(x-2\right)=120+6=126\\ =>x-2=126:3=42\\ =>x=42+2=44\)
Bài 1 . Tìm X
a) 7/15 < X/40 < 8/15 ( phân số )
b) X - 140 : 35 = 270
c) 180 - ( X - 45 ) : 2 = 120
d) ( X - 2 ) x 3 - 270 : 45 = 120
e) 3,8 : ( X - 1,05 ) = 19/9 : 1/3 ( phân số )
f) 2 - ( 43/8 + X - 168/24 ) : 38/3 = 0
(x – 2) x 3 – 270 : 45 = 120
\(\left(x-2\right)\times3-270:45=120\)
\(\Rightarrow3x-6-6=120\)
\(\Rightarrow3x=120+6+6\)
\(\Rightarrow3x=132\)
\(\Rightarrow x=44\)
(x−2)×3−270:45=120(x−2)×3−270:45=120
⇒3x−6−6=120⇒3x−6−6=120
⇒3x=120+6+6⇒3x=120+6+6
⇒3x=132⇒3x=132
⇒x=44
Tìm x
71+65*4 bằng (x+140):x+260
180-(x-45):2 bằng 120
(2009-x) : 29+32 bằng 100
(x-2) *3 -270:45 bằng 120
(x +0,2 ) + (x+0,7) + (x+1,2) +.....+ (x+4,2) + (x+4,7) bằng 65,5
các anh chị giải giúp em nha
\(180-\left(x-45\right)\div2=120\)
\(\left(x-45\right)\div2=180-120\)
\(\left(x-45\right)\div2=60\)
\(x-45=60\times2\)
\(x-45=120\)
\(x=120+45\)
\(x=165\)
\(\left(2009-x\right)\div29+32=100\)
\(\left(2009-x\right)\div29=100-32\)
\(\left(2009-x\right)\div29=68\)
\(2009-x=68\times29\)
\(2009-x=1972\)
\(x=2009-1972\)
\(x=37\)
\(\left(x-2\right)\times3-270\div45=120\)
\(\left(x-2\right)\times3-6=120\)
\(\left(x-2\right)\times3=120+6\)
\(\left(x-2\right)\times3 =126\)
\(x-2=126\div3\)
\(x-2=42\)
\(x=42+2\)
\(x=44\)
\(\left(x+0,2\right)+\left(x+0,7\right)+\left(x+1,2\right)+...+\left(x+4,2\right)+\left(x+4,7\right)=65,5\)
\(\left(x+x+x+..+x+x\right)+\left(0,2+0,7+1,2+...+4,2+4,7\right)=65,5\)
\(10x+\frac{\left(0,2+4,7\right)\times10}{2}=65,5\)
\(10x+24,5=65,5\)
\(10x=65,5-24,5\)
\(10x=41\)
\(\Rightarrow x=4,1\)
(x-2)×3-270÷45=120
\(\left(x-2\right)\cdot3-270:45=120\)
\(\left(x-2\right)\cdot3-6=120\)
\(\left(x-2\right)\cdot3=120+6\)
\(\left(x-2\right)\cdot3=126\)
\(x-2=126:3\)
\(x-2=42\)
\(x=42+2\)
\(x=44\)
X-270:45=120
x - 270 : 45 = 120
<=> x - 270 = 120 x 45
<=> x - 270 = 5400
<=> x = 5400 + 270
<=> x = 5670
tìm các số tự nhiên x bít
a, ( x - 140 ) :35 = 270
b, 180 - ( x - 45 ) : 2 = 120
c, 25 . x - 100 = 150
d,( x + 200 ) : 4 = 460 + 85.4
e, 1 + 3 + 5 + 7 + .... + x = 25
help
A, x=9590 D, x=3000
B, x=165 E, x=9
C, x=10
(x-140):35=270
x-140 = 270 x 35
x-140 = 9450
x = 9450+ 140
x = 9590
180 - ( x - 45 ) : 2 = 120
180 - ( x- 45) = 120 x 2
180 - (x - 45) = 240
x -45 = 180 - 240
x - 45 = -60
x = -60 + 45
x = -15