\(\frac{x}{2}\)*3 +x * 4 =23,1
tìm x:
\(x^5-\frac{1}{2}.x+7.x^3-2x+\frac{1}{5}.x^3+3.x^4-x^5+\frac{2}{5}+15=23,1\)
x5 - 1/2 * x + 7 * x3 - 2x + 1/5 * x3 + 3 * x4 - x5 + 2/5 + 15 = 23,1
=> (x5 - x5) + (7 * x3 + 1/5 * x3) + (-1/2 * x - 2x) + 3 * x4 + 2/5 + 15 = 23,1
=> 0 + (36 * x3) /5 + (-5x)/2 + 3 * x4 + 15,4 = 23,1
=> (36 * x3) /5 + (-5x)/2 + 3 * x4 = 23,1 - 15,4 = 7,7
=> ............
Tìm x:
a) \(\frac{x}{2}\)x 3 + X x 4 = 23,1 x X
b) X x \(\frac{1}{4}\)+ X x \(\frac{1}{5}\)+ X x 2 = 19,6 x X
Tìm x:
a) \(\frac{x}{2}\)x 3 + X x 4 = 23,1 x X
b) X x \(\frac{1}{4}\)+ X x \(\frac{1}{5}\)+ X x 2 = 19,6 x X
Tìm x :
\(x\times\frac{2}{3}+x\times4=23,1\)
chỉ tớ bài này dc ko
y : 2 x 3 + y x 4 = 23,1
mik xl mik chịu thôi!Mik tính ra thì là -0,225
y : 2 x 3 = 23,1 :4
y : 6 = 5.775
y = 5.775 x6
y = 34.65
mình ko chắc lắm bạn tính lại nha
y : 2 x 3 + y = 23,1 : 4
y : 2 x 3 = 5,775
y : 2 = 5,775 : 3
y : 2 = 1.925
y = 1,925 x 2
y = 3,85
tim x
X/3 x 4 + X x 1/2 =23,1 x X
\(\frac{x}{2}\cdot3+x\cdot4=23,1\)
\(\frac{x}{2}.3+x.4=\frac{231}{10}\)
\(x.\frac{3}{2}+x.4=\frac{231}{10}\)
\(x.\left(\frac{3}{2}+4\right)=\frac{231}{10}\)
\(x.\left(\frac{3}{2}+\frac{8}{2}\right)=\frac{231}{10}\)
\(x.\frac{11}{2}=\frac{231}{10}\)
\(x=\frac{231}{10}:\frac{11}{2}\)
\(x=\frac{231}{10}.\frac{2}{11}\)
\(x=\frac{21}{5}\)
\(\frac{x}{2}.3+4x=23,1\)
\(\Leftrightarrow\frac{3}{2}x+4x=23,1\)
\(\Leftrightarrow\frac{11}{2}x=23,1\)
\(\Leftrightarrow x=\frac{21}{5}\)
\(\frac{x}{2}.3+x.4=23,1\)
\(\Leftrightarrow\frac{3}{2}.x+4.x=23,1\)
\(\Leftrightarrow x.\left(\frac{3}{2}+4\right)=23,1\)
\(\Leftrightarrow x.\frac{11}{2}=23,1\)
\(\Leftrightarrow x=23,1:\frac{11}{2}\)
\(\Rightarrow x=\frac{21}{5}=4,2\)
Vậy \(x=4,2\)
\(\frac{x}{2}\)x 3 + X x 4 = 23,1
\(\frac{x}{2}\cdot3+x\cdot4=23,1\)
\(\frac{x\cdot3}{2}+x\cdot4=23,1\)
\(x\cdot\left(\frac{3}{2}+4\right)=23,1\)
\(x\cdot\frac{11}{2}=23,1\)
\(x=23,1:\frac{11}{2}=4,2\)
X + 1,23 : 3 = 1,845
X x 1/4 + X x 1/5 + X x 2= 19,6
X/2 x X + X x4 =23,1
X + 3 1/2 + 20 =24 1/4 ( hỗn số x a/b Nha )
a) \(x+1,23\div3=1,845\) c) Không rõ
\(x+0,41=1,845\)
\(x=1,845-0,41\)
\(x=1,435\)
b) \(x\times\frac{1}{4}+x\times\frac{1}{5}+x\times2=19,6\) d) \(x+3\frac{1}{2}+20=24\frac{1}{4}\)
\(x\times\left(\frac{1}{4}+\frac{1}{5}+2\right)=19,6\) \(x+\frac{7}{2}+20=\frac{97}{4}\)
\(x\times\frac{49}{20}=19,6\) \(x+\frac{47}{2}=\frac{97}{4}\)
\(x=19,6\div\frac{49}{20}\) \(x=\frac{97}{4}\div\frac{47}{2}\)
\(x=8\) \(x=\frac{97}{94}\)
X + 1,23 : 3 = 1,845
X + 0,41 = 1,845
X = 1,845 - 0,41
= 1,435
X x 1/4 + X x 1/5 + X x 2 = 19,6
X x ( 1/4 + 1/5 + 2 ) = 19,6
X x 2,45 = 19,6
X = 19, 6 : 2, 45
X = 8