Các câu hỏi tương tự
Tìm x:
\(\frac{\left(13\frac{2}{9}-15\frac{2}{3}\right)\cdot\left(30^2-5^4\right)}{\left(18\frac{3}{7}-17\frac{1}{4}\right)\cdot\left(25-12\cdot5^2\right)}\cdot x=\frac{\frac{2}{11}+\frac{3}{13}+\frac{4}{15}+\frac{5}{17}}{4\frac{1}{11}+\frac{5}{13}+\frac{9}{15}+\frac{13}{17}}\)
bài 1: Tính bằng cách hợp lí1)frac{11}{3}:3frac{1}{3}-32)frac{5}{6}:frac{3}{52}-frac{5}{6}.47frac{1}{3}3)left(9frac{3}{4}:frac{26}{5}+frac{17}{5}.2frac{7}{34}right):left(-1frac{9}{16}right)4)left(frac{1}{2}-1right).left(frac{1}{3}-1right)...left(frac{1}{2002}-1right).left(frac{1}{2003}-1right)5)left(1-frac{1}{21}right).left(1-frac{1}{28}right).left(1-frac{1}{36}right)...left(1-frac{1}{1326}right)bài 2: tìm x :1)left(frac{2x}{3}-3right):left(-10right)frac{2}{5}2)left(x+frac{1}{5}right)left(x-frac...
Đọc tiếp
bài 1: Tính bằng cách hợp lí
1)\(\frac{11}{3}:3\frac{1}{3}-3\)
2)\(\frac{5}{6}:\frac{3}{52}-\frac{5}{6}.47\frac{1}{3}\)
3)\(\left(9\frac{3}{4}:\frac{26}{5}+\frac{17}{5}.2\frac{7}{34}\right):\left(-1\frac{9}{16}\right)\)
4)\(\left(\frac{1}{2}-1\right).\left(\frac{1}{3}-1\right)...\left(\frac{1}{2002}-1\right).\left(\frac{1}{2003}-1\right)\)
5)\(\left(1-\frac{1}{21}\right).\left(1-\frac{1}{28}\right).\left(1-\frac{1}{36}\right)...\left(1-\frac{1}{1326}\right)\)
bài 2: tìm x :
1)\(\left(\frac{2x}{3}-3\right):\left(-10\right)=\frac{2}{5}\)
2)\(\left(x+\frac{1}{5}\right)\left(x-\frac{2}{7}\right)< 0\)
mách mình với mấy cái kia là hỗn số nha
tìm x biết:
a)\(\left(2.x+3\right)-\left(5.x-17\right)=9\)
b)\(\left(\frac{1}{5}+\frac{4}{5}.x\right)-\left(\frac{2}{5}.x+\frac{1}{9}\right)=\frac{3}{7}\)
có cả lời giải mới tik
thực hiện phép tính :
b, \(\left(\frac{-2}{9}\right)-\left(\frac{-1}{21}\right)+\left(\frac{-3}{5}\right)-\left(\frac{-1}{2}\right)-\left(-1\frac{13}{8}\right)-\frac{1}{7}-\frac{9}{35}\)
làm ơn help me với
tìm x biết:
a,\(7,5x:\left(9-6\frac{13}{21}\right)=2\frac{13}{25}\)
b,\(\frac{\left(1,16-x\right)\cdot5,25}{\left(10\frac{5}{9}-7\frac{1}{4}\right)\cdot2\frac{2}{17}}\)=75%
a) left|2xfrac{1}{3}right|+frac{5}{6}1b)frac{17}{2}-left|2x-frac{3}{4}right|-frac{7}{4}c) frac{2}{3}x-frac{3}{2}xfrac{5}{12}d) frac{2}{5}+frac{3}{5}.left(3x-3,7right)-frac{53}{10}e) frac{7}{9}:left(2+frac{3}{4}xright)+frac{5}{9}frac{23}{27}f) left(2frac{4}{5}x-50right):frac{2}{3}51g)left(x+frac{1}{2}right).left(frac{2}{3}-2xright)0h)x.3frac{1}{4}+left(-frac{7}{6}right).x-1frac{2}{3}frac{5}{12}i)frac{6}{2}frac{-5+x}{15}k)frac{1}{21}+frac{1}{28}+frac{1}{36}+...+frac{2}{xleft(x+1right)}frac{2}{9}
Đọc tiếp
a) \(\left|2x\frac{1}{3}\right|+\frac{5}{6}=1\)
b)\(\frac{17}{2}-\left|2x-\frac{3}{4}\right|=-\frac{7}{4}\)
c) \(\frac{2}{3}x-\frac{3}{2}x=\frac{5}{12}\)
d) \(\frac{2}{5}+\frac{3}{5}.\left(3x-3,7\right)=-\frac{53}{10}\)
e) \(\frac{7}{9}:\left(2+\frac{3}{4}x\right)+\frac{5}{9}=\frac{23}{27}\)
f) \(\left(2\frac{4}{5}x-50\right):\frac{2}{3}=51\)
g)\(\left(x+\frac{1}{2}\right).\left(\frac{2}{3}-2x\right)=0\)
h)\(x.3\frac{1}{4}+\left(-\frac{7}{6}\right).x-1\frac{2}{3}=\frac{5}{12}\)
i)\(\frac{6}{2}=\frac{-5+x}{15}\)
k)\(\frac{1}{21}+\frac{1}{28}+\frac{1}{36}+...+\frac{2}{x\left(x+1\right)}=\frac{2}{9}\)
1) frac{2}{5}xfrac{1}{3}-frac{2}{15}:frac{1}{5}+frac{3}{5}xfrac{1}{3}2)left(3frac{1}{3}+2,5right):left(3frac{1}{6}-4frac{1}{5}right)-frac{11}{31}3)left[6+left(frac{1}{2}right)^3-left|-frac{1}{2}right|right]:frac{3}{12}4)frac{18}{37}+frac{8}{24}+frac{19}{37}-1frac{23}{24}+frac{2}{3}5)left(-2right)^3xleft(frac{3}{4}-0,25right):left(2frac{1}{4}-1frac{1}{6}right)6)left(frac{2}{5}right)^2+5frac{1}{2}xleft(45-2right)+frac{23}{4}7)frac{4}{9}-19frac{1}{3}-frac{4}{9}x39frac{1}{3}8)left(-frac{1}{2}right)^...
Đọc tiếp
1) \(\frac{2}{5}x\frac{1}{3}-\frac{2}{15}:\frac{1}{5}+\frac{3}{5}x\frac{1}{3}\)
2)\(\left(3\frac{1}{3}+2,5\right):\left(3\frac{1}{6}-4\frac{1}{5}\right)-\frac{11}{31}\)
3)\(\left[6+\left(\frac{1}{2}\right)^3-\left|-\frac{1}{2}\right|\right]:\frac{3}{12}\)
4)\(\frac{18}{37}+\frac{8}{24}+\frac{19}{37}-1\frac{23}{24}+\frac{2}{3}\)
5)\(\left(-2\right)^3x\left(\frac{3}{4}-0,25\right):\left(2\frac{1}{4}-1\frac{1}{6}\right)\)
6)\(\left(\frac{2}{5}\right)^2+5\frac{1}{2}x\left(45-2\right)+\frac{23}{4}\)
7)\(\frac{4}{9}-19\frac{1}{3}-\frac{4}{9}x39\frac{1}{3}\)
8)\(\left(-\frac{1}{2}\right)^2:\frac{1}{4}-2x\left(-\frac{1}{2}\right)^2\)
9)\(125\%x\left(-\frac{1}{2}\right)^3:\left(1\frac{5}{16}-1,5\right)+2008^0\)
giúp mình nha mai mình học rùi
Tìm x
a)\(\left(\frac{1}{24.25}+\frac{1}{25.26}+...+\frac{1}{29.30}\right).120+x:\frac{1}{3}=-4\)
b)\(1\frac{3}{5}+\left(\frac{\frac{2}{7}+\frac{2}{17}+\frac{2}{37}}{\frac{5}{7}+\frac{5}{17}+\frac{5}{37}}\right).x=\frac{16}{5}\)
Tìm x:
\(5\frac{8}{17}:x+\left(-\frac{4}{17}\right):x+3\frac{1}{7}:17\frac{1}{3}=\frac{4}{11}\)
\(\left(x+\frac{1}{5}\right)^2+\frac{17}{25}=\frac{26}{25}\)
\(-1\frac{5}{27}-\left(3x-\frac{7}{9}\right)^3=\frac{-24}{27}\)