Tìm x
A. 3/5.(3/2 - x) = -0.3
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Tìm x, biết
a. 5/3 : x/4 = 6 : 0.3
\(\frac{5}{3}:\frac{x}{4}=6:0,3\)
\(\frac{20}{3x}=20\)
\(3x=1\)
\(x=\frac{1}{3}\)
Vậy \(x=\frac{1}{3}\)
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\(\frac{5}{3}\div\frac{x}{4}=6\div0,3\)
\(\Rightarrow\frac{5}{3}\div\frac{x}{4}=20\)
\(\Rightarrow\frac{x}{4}=\frac{1}{12}\)
\(\Rightarrow\frac{3x}{12}=\frac{1}{12}\)
\(\Rightarrow3x=1\)
\(\Rightarrow x=\frac{1}{3}\)
~Study well~
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Tìm x trong các tỉ lệ thức sau
{1/3*x} :2/3 =1 3/4 :2/5
4.5 :0.3 =2.25 : {0.1*x}
8 :{1/4*x} =2 :0.02
3 :2 1/4 =3/4 :{6*x}
tìm x
5x -x =4088 + (5 ^7 + 5^9 ) . (6 ^8 + 6^10 ) . (2^4-4^2)
3 ^2 . ( 15 - 2x )- 5 ^2 = 5 . 2 ^2
152 - ( 2x-1)^3 = 3^0.3^1.3^2
AI NHANH MÌNH TICK NHA
Tìm x
4/5.x-4/3.(x-1/4)=0.3+(-1/3)2
Ai biết làm thì tl giúp mjk nhé! Mjk cảm ơn trước
\(\frac{4}{5}x-\frac{4}{3}\left(x-\frac{1}{4}\right)=0,3+\left(-\frac{1}{3}\right)^2\)
\(\Rightarrow\frac{4}{5}x-\frac{4}{3}x+\frac{1}{3}=0,3+\frac{1}{9}\)
\(\Rightarrow\frac{-8}{15}x+\frac{1}{3}=\frac{37}{90}\)
\(\Rightarrow-\frac{8}{15}x=\frac{7}{90}\)
\(\Rightarrow x=-\frac{7}{48}\)
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1 Tìm x
a) 5/6-2/3X=1/9
b)2/3:X=2 và 1/2:(-0.3)
c)1/5+2x= -2 và 1/4
d)X:(-1/5) mũ 3 = -1/5
Gỉai hộ mình với nhanh lên mình dgd cần gấp
bài 3:tìm x
a)x(x+4)+(5+x)(5-x)=3
b)(2x-3)^2=(4x+3)^2
a) \(\Rightarrow x^2+4x+25-x^2=3\Rightarrow4x=-22\Rightarrow x=-\dfrac{11}{2}\)
b) \(\Rightarrow\left(4x+3-2x+3\right)\left(4x+3+2x-3\right)=0\)
\(\Rightarrow2\left(x+3\right).6x=0\)
\(\Rightarrow\left[{}\begin{matrix}x=0\\x=-3\end{matrix}\right.\)
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Tìm x
a. 1/2:x=-0.3
b. 1/5(2-x)=3/17:5/34
a: =>1/2:x=-3/10
hay x=1/2:(-3/10)=-5/3
b: =>1/5(2-x)=6/5
=>2-x=6
hay x=-4
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Tìm x
a) x + 2/5 = 1/2
b) x + 3/7 = 2/5 + 3/10
c) 19 - x = 8/5 - 3/4
\(a,x=\dfrac{1}{2}-\dfrac{2}{5}\)
\(x=\dfrac{1}{10}\)
\(b,x+\dfrac{3}{7}=\dfrac{7}{10}\)
\(x=\dfrac{7}{10}-\dfrac{3}{7}\)
\(x=\dfrac{19}{70}\)
\(c,19-x=\dfrac{17}{20}\)
\(x=19-\dfrac{17}{20}\)
\(x=\dfrac{363}{20}\)
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Tìm X
a, 3/5 + X = 1/2 + 1 b, 3 : X = 2/3 + 2\(\dfrac{1}{2}\)
a) \(\dfrac{3}{5}+x=\dfrac{1}{2}+1\)
\(\dfrac{3}{5}+x=\dfrac{3}{2}\)
\(x=\dfrac{3}{2}-\dfrac{3}{5}\)
\(x=\dfrac{15}{10}-\dfrac{6}{10}\)
\(x=\dfrac{9}{10}\)
b) \(3:x=\dfrac{2}{3}+2\dfrac{1}{2}\)
\(3:x=\dfrac{2}{3}+\dfrac{5}{2}\)
\(3:x=\dfrac{4}{6}+\dfrac{15}{6}\)
\(3:x=\dfrac{19}{6}\)
\(x=3:\dfrac{19}{6}\)
\(x=3\times\dfrac{6}{19}\)
\(x=\dfrac{18}{19}\)
Mik nhớ câu này làm rồi mak!!!
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Bình luận (8)
a,\(\dfrac{3}{5}\)+ x=\(\dfrac{1}{2}\)+1
\(\dfrac{3}{5}\)+x=\(\dfrac{3}{2}\)
x=\(\dfrac{3}{2}\)-\(\dfrac{3}{5}\)
x=\(\dfrac{9}{10}\)
b,
b) 3:x=23+2123:x=23+212
3:x=23+523:x=23+52
3:x=46+1563:x=46+156
3:x=1963:x=196
x=3:196x=3:196
x=3×619x=3×619
x=1819
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a) \(\dfrac{3}{5}+x=\dfrac{1}{3}+2\)
\(\dfrac{3}{5}+x=\dfrac{1}{3}+\dfrac{2}{1}\)
\(\dfrac{3}{5}+x=\dfrac{1}{3}+\dfrac{6}{3}\)
\(\dfrac{3}{5}+x=\dfrac{7}{3}\)
\(x=\dfrac{7}{3}-\dfrac{3}{5}\)
\(x=\dfrac{35}{15}-\dfrac{9}{15}\)
\(x=\dfrac{26}{15}\)
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