tìm x biết: x + 20%x = -4,8
Tìm x biết
x + 20% * x = -4,8
GIÚP MÌNH VỚI
Xx1+20% x X = -4,8
Xx(1+20%) = -4,8
Xx1,2=-4,8
X = -4,8 : 1,2
X = -4
x + 20% * x =4.8
x * 1 + 0.2 *x =4.8
x * ( 1 + 0.2 ) =4.8
x * 1.2 =4.8
x = 4.8 : 1.2
x = 4
tìm x
72:x=20
57:x=3,8
24:x=4,8
x*10=8,5
\(72:x=20\)
\(x=72:20\)
\(x=3,6\)
\(57:x=3,8\)
\(x=57:3,8\)
\(x=15\)
\(24:x=4,8\)
\(x=24:4,8\)
\(x=5\)
\(x\times10=8,5\)
\(x=8,5:10\)
\(x=0,85\)
72 : \(\chi\) = 20
\(\chi\) = 72 : 20
\(\chi\) = 3,6
57 :\(\chi\) = 3,8
\(\chi\) = 57 : 3,8
\(\chi\) = 15
24 :\(\chi\) = 4,8
\(\chi\) = 24 : 4,8
\(\chi\) = 5
\(\chi\)x 10 = 8,5
\(\chi\) = 8,5 : 10
\(\chi\) = 0,85
Tìm x biết:
(-5,6):(-4,8) = x:(-18)
-> x : (-18) = ( -5,6 ) : ( -4,8 )
x : (-18) = \(\dfrac{7}{6}\)
x = \(\dfrac{7}{6}.\left(-18\right)\)
x = -21
1:4=x:(-18)
\(\Rightarrow\)\(\dfrac{1}{4}=\dfrac{x}{-18}\)\(\Rightarrow\)4x=-18
x=-18:4
x=\(\dfrac{-18}{4}\)
Ta có: \(\left(-5.6\right):\left(-4.8\right)=x:\left(-18\right)\)
\(\Leftrightarrow x:\left(-18\right)=\dfrac{56}{48}\)
\(\Leftrightarrow x:\left(-18\right)=\dfrac{7}{6}\)
\(\Leftrightarrow x=\dfrac{7}{6}\cdot\left(-18\right)=-21\)
Vậy: x=21
Tìm x biết:
4,8 ×x = 14,64
A. 3,25
B. 3,5
C. 3,05
D. 3,15
x +20%x = -4,8
x - 15%x = -2 11/20
\(x+20\%x=-4,8\)
\(\Leftrightarrow x+\frac{1}{5}x=-4,8\)
\(\Leftrightarrow\frac{6}{5}x=-4,8\)
\(\Leftrightarrow x=-4,8:\frac{6}{5}\)
\(\Leftrightarrow x=-4\)
\(x-15\%x=-2\frac{11}{20}\)
\(\Leftrightarrow x-\frac{3}{20}x=\frac{-51}{20}\)
\(\Leftrightarrow\frac{17}{20}x=\frac{-51}{20}\)
\(\Leftrightarrow x=\frac{-51}{20}:\frac{17}{20}\)
\(\Leftrightarrow x=-3\)
x+20%x=-4,8
x + 20%x = -4/8
x + 1/5x = -1/2
x . ( 1 + 1/5 ) = -1/2
x . 6/5 = -1/2
x = -1/2 : 6/5
x = -1/2 . 5/6
x = -5/12
Vậy x = -5/12
Tham khảo nha !!!
\(x+20\%x=-4,8\)
\(\Leftrightarrow x+\frac{x}{5}=-4,8\)
\(\Leftrightarrow\frac{6x}{5}=-4,8\)
\(\Leftrightarrow6x=-24\)
\(\Rightarrow x=-4\)
x + 20% * x = -4,8
\(x+\frac{x}{5}=-4.8\)
\(\frac{6x}{5}=-4.8\)
6x=-24
x=-4
Tìm x biết:
15 x ( 32 -24 : x ) -230 = 70
0,6 (x - 3,7) = 4,8
15*(32-24:x)-230=70
15*(32-24:x)=70+230
15*(32-24:x)=300
32-24:x=300:15
32-24:x=20
24:x=32-20
24:x=12
x=24:12
x=2
tim x
x+20%x=-4,8
x + 20%x = -4,8
<=> x + 1/5x = -4,8
<=> 6/5x = -4,8
x = -4,8 : 6/5
x = -4
Vậy x = -4
đúng thì ủng hộ nha