\(D=\dfrac{3}{5}-\dfrac{1}{4}-5+3,3\)
\(=\dfrac{3}{5}-\dfrac{1}{4}-\dfrac{5}{1}+\dfrac{33}{10}\)
\(=\dfrac{12}{20}-\dfrac{5}{20}-\dfrac{100}{20}+\dfrac{66}{20}\)
\(=-\dfrac{27}{20}\)
`= 3/5 - 1/4 - 5 + 3,3`
`= 0,6 - 0,25 - 5 + 3,3`
`= -1,35.`
\(D=\dfrac{3}{5}-\dfrac{1}{4}-5+3,3\)
\(=\dfrac{3}{5}-\dfrac{1}{4}-\dfrac{5}{1}+\dfrac{33}{10}\)
\(=\dfrac{12}{20}-\dfrac{5}{20}-\dfrac{100}{20}+\dfrac{66}{20}\)
\(=-\dfrac{27}{20}\)
`= 3/5 - 1/4 - 5 + 3,3`
`= 0,6 - 0,25 - 5 + 3,3`
`= -1,35.`
Tìm x
a)\(\sqrt{x}=5\) b)\(3^x=9\) c)\(\frac{x}{4}=\frac{5}{9}\) d)\(|x+0,7|=3,3\) e)\(\frac{3}{4}-\left(x+\frac{1}{2}\right)=\frac{4}{5}\)
f)\(x:\left(-\frac{1}{2}\right)=\left(-\frac{1}{2}\right)\) g)\(\frac{3}{4}+\frac{1}{4}:x=\frac{2}{5}\)
Mong các bạn hãy cố gắng giúp mình
tính nhanh
-4,43. 1,2 + 0,87. (-6/5) + (-3,3) : 5/6
giúp mk với ai nhanh cho 3 tk luôn nhé
P=\frac{3,85-3,3+\frac{11}{17}+\frac{11}{5}}{4,55-3,9+\frac{13}{17}+\frac{13}{5}}P=4,55−3,9+1713+5133,85−3,3+1711+511
tính nhanh
-4,43. 1,2 + 0,87. (-6/5) + (-3,3) : 5/6
giúp mk với ai nhanh cho 3 tk luôn nhé
tìm x biết : a) / x+1,3 / = 3,3
b) / x -\(\frac{3}{4}\)/ = -\(\frac{1}{4}\) =0
c) / x-3 / = / 4-x /
d) / x-1 / =2x
a, 1\(\dfrac{5}{18}\)+\(\dfrac{7}{25}\)-\(\dfrac{5}{18}\)+\(\dfrac{18}{25}\)-0, 75
b, \(\dfrac{2}{5}\).\(\dfrac{1}{3}\)-\(\dfrac{4}{3}\).\(\dfrac{2}{5}\)
c, (\(\dfrac{-1}{4}\)).( 6\(\dfrac{2}{11}\)) + 3 \(\dfrac{9}{11}\).(\(\dfrac{-1}{4}\))
d, 4. (-\(\dfrac{1}{2}\))\(^{3_{ }}\)-\(_{ }\)2. (\(\dfrac{-1}{2}\))\(^2\) + 3. (\(\dfrac{-1}{2}\)) + 1
e, \(\dfrac{1}{6}\)-(\(\dfrac{2}{3}\))\(^2\) + \(\dfrac{5}{18}\)
f, (\(\dfrac{4}{3}\)-\(\dfrac{3}{2}\))\(^2\)- 2.|-\(\dfrac{1}{9}\)| + (-\(\dfrac{5}{18}\))
thực hiên phép tính D= 1/2-1/3-2/3+1/4+2/4+3/4-1/5-2/5-3/5-4/5+.........+1/10+2/10+...........+9/10
Bài 1: a, x + 0,5 = -2/3 b, x - (-2/5) = 5/7 c, 5/4 - 6x = 7 1/2 d, 3 - 2x - (5/4 - 7/5) = 9/20 bài 2: a, x : (-2/3) mũ 3 = -2/3 b, (2/5) mũ 5 nhân x = (2/5) mũ 7 c, 343/125 = (7/5) mũ x d, (-1/3) nhân x = 1/243
Tính:
a) -5/7(14/5 - 7/10) : |-2/3| - 3/4(8/9 + 16/3) + 10/3(1/3 + 1/5)
b) 17/-26(1/6 - 5/3) : 17/13 - 20/3(2/5 - 1/4) + 2/3(6/5 - 9/2)
c) -8/9(9/8 - 3/2) + 5/4 : (5/2 - 15/4) - 3/4(10/9 - 8/3) : (-1/3)
d) 21/10 : (12/5 - 9/10) . (-4/7) - 3/2(1/6 - 7/12) + 1/5(3/2 - 1/4)