\(\dfrac{-3}{x}=\dfrac{2^{13}}{2^{10}}=\dfrac{2^3}{1}=>-3=2^3.x\)
=>\(x=\dfrac{-3}{2^3}=\dfrac{-3}{8}\)
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Các câu hỏi tương tự
tìm x:
a) \(-8:\left(4\dfrac{1}{5}x+\dfrac{3}{10}\right)=4\dfrac{4}{9}\)
b) \(4\dfrac{2}{3}-\left(\dfrac{3}{5}:x\right)=-20\%\)
c) \(\left(\dfrac{13}{10}x-15\right).-\dfrac{5}{14}=3\)
d) \(\left(5,5x-44\right):\left(-\dfrac{3}{2}\right)=30\)
e) \(\dfrac{11}{14}:\left(2x+\dfrac{5}{7}\right)=-\dfrac{11}{18}\)
Bài 1: Tìm x, biết:
a, left(x+dfrac{1}{4}-dfrac{1}{3}right):left(2+dfrac{1}{6}-dfrac{1}{4}right)dfrac{7}{46}
b, dfrac{13}{15}-left(dfrac{13}{21}+xright).dfrac{7}{12}dfrac{7}{10}
Bài 2: Thực hiện phép tính:
a, left(2dfrac{5}{6}+1dfrac{4}{9}right):left(10dfrac{1}{12}-9dfrac{1}{2}right)
b, 1dfrac{5}{18}-dfrac{5}{18}.left(dfrac{1}{15}+1dfrac{1}{12}right)
c, -dfrac{1}{7}.left(9dfrac{1}{2}-8,75right):dfrac{2}{7}+0,625:1dfrac{2}{3}
Đọc tiếp
Bài 1: Tìm x, biết:
a, \(\left(x+\dfrac{1}{4}-\dfrac{1}{3}\right):\left(2+\dfrac{1}{6}-\dfrac{1}{4}\right)=\dfrac{7}{46}\)
b, \(\dfrac{13}{15}-\left(\dfrac{13}{21}+x\right).\dfrac{7}{12}=\dfrac{7}{10}\)
Bài 2: Thực hiện phép tính:
a, \(\left(2\dfrac{5}{6}+1\dfrac{4}{9}\right):\left(10\dfrac{1}{12}-9\dfrac{1}{2}\right)\)
b, 1\(\dfrac{5}{18}-\dfrac{5}{18}.\left(\dfrac{1}{15}+1\dfrac{1}{12}\right)\)
c, \(-\dfrac{1}{7}.\left(9\dfrac{1}{2}-8,75\right):\dfrac{2}{7}+0,625:1\dfrac{2}{3}\)
a, 7,5 : ( 9 _\(6\dfrac{13}{21}\) ) = \(2\dfrac{13}{25}\)
b, \(\dfrac{\left(1,16-x\right).5,25}{\left(10\dfrac{5}{9}-7\dfrac{1}{4}\right).2\dfrac{2}{17}}\) = 75%
\(\dfrac{x-1}{10}\) + \(\dfrac{x-2}{11}\) + \(\dfrac{x-3}{12}\) = \(\dfrac{x-4}{13}\) + \(\dfrac{x-5}{14}\)+ \(\dfrac{x-6}{15}\)
Tinhs x
tìm x:
a) \(\left(0,3+x\right).2\dfrac{1}{4}:x=-\dfrac{13}{40}\)
b) \(0,25.x-\dfrac{27}{8}.x=\dfrac{3}{4}\)
c) \(\dfrac{7}{8}+4\dfrac{1}{2}:x=-\dfrac{13}{40}\)
d) \(32\%-0,25:x=-3\dfrac{2}{5}\)
12 tháng 8 2017 lúc 8:43
thực hiện phép tính
a,dfrac{2}{3}-dfrac{3}{5}divleft(-1dfrac{1}{5}right)+left(dfrac{-2}{3}right)timesdfrac{3}{8}
b,17dfrac{11}{9}-left(6dfrac{3}{13}+7dfrac{11}{19}right)+left(10dfrac{3}{13}-5dfrac{1}{4}right)
c,left(dfrac{-3}{2}right)^2-left[-2dfrac{1}{3}-left(dfrac{3}{4}+dfrac{1}{3}right)div2dfrac{3}{5}right]timesleft(dfrac{-3}{4}right)
d,dfrac{21}{33}divdfrac{11}{5}-dfrac{13}{33}divdfrac{11}{5}+dfrac{25}{33}divdfrac{11}{5}+dfrac{6}{11}
giúp mình nhé
Đọc tiếp
thực hiện phép tính
a,\(\dfrac{2}{3}-\dfrac{3}{5}\div\left(-1\dfrac{1}{5}\right)+\left(\dfrac{-2}{3}\right)\times\dfrac{3}{8}\)
b,\(17\dfrac{11}{9}-\left(6\dfrac{3}{13}+7\dfrac{11}{19}\right)+\left(10\dfrac{3}{13}-5\dfrac{1}{4}\right)\)
c,\(\left(\dfrac{-3}{2}\right)^2-\left[-2\dfrac{1}{3}-\left(\dfrac{3}{4}+\dfrac{1}{3}\right)\div2\dfrac{3}{5}\right]\times\left(\dfrac{-3}{4}\right)\)
d,\(\dfrac{21}{33}\div\dfrac{11}{5}-\dfrac{13}{33}\div\dfrac{11}{5}+\dfrac{25}{33}\div\dfrac{11}{5}+\dfrac{6}{11}\)
giúp mình nhé
bài 1 : so sánh :
a) dfrac{23}{21}vàdfrac{21}{23}
b)dfrac{19}{26}và dfrac{21}{25}
bài 2 : sắp sếp các phân số sau từ bé đến lớn :
a)dfrac{7}{36};dfrac{24}{36};dfrac{13}{36};dfrac{1}{36};dfrac{43}{36};dfrac{36}{36}
b)dfrac{-3}{10};dfrac{-31}{100};dfrac{-297}{1000};dfrac{10000}{-3056}
c)dfrac{13}{20};dfrac{7}{20};dfrac{9}{4};dfrac{2}{5};dfrac{1}{2}
d)dfrac{13}{21};dfrac{152}{17};dfrac{13}{17};dfrac{-5}{21}
e)dfrac{-1}{2};dfrac{3}{-4};dfrac{-2}{3};dfrac{4}{-5}
Đọc tiếp
bài 1 : so sánh :
a) \(\dfrac{23}{21}\)và\(\dfrac{21}{23}\)
b)\(\dfrac{19}{26}\)và \(\dfrac{21}{25}\)
bài 2 : sắp sếp các phân số sau từ bé đến lớn :
a)\(\dfrac{7}{36};\dfrac{24}{36};\dfrac{13}{36};\dfrac{1}{36};\dfrac{43}{36};\dfrac{36}{36}\)
b)\(\dfrac{-3}{10};\dfrac{-31}{100};\dfrac{-297}{1000};\dfrac{10000}{-3056}\)
c)\(\dfrac{13}{20};\dfrac{7}{20};\dfrac{9}{4};\dfrac{2}{5};\dfrac{1}{2}\)
d)\(\dfrac{13}{21};\dfrac{152}{17};\dfrac{13}{17};\dfrac{-5}{21}\)
e)\(\dfrac{-1}{2};\dfrac{3}{-4};\dfrac{-2}{3};\dfrac{4}{-5}\)
Tính:
a. 75% - 1dfrac{1}{2}.dfrac{4}{3} + 1,5 : dfrac{-9}{4}- (-dfrac{1}{2})2
b. dfrac{-4}{9}.dfrac{6}{13} + 7dfrac{4}{9} - dfrac{4}{9}:dfrac{13}{7}-5dfrac{4}{9} - 2
Tìm x:
a. dfrac{7}{12}-left(x+dfrac{7}{10}right):dfrac{6}{5}dfrac{-5}{4}
b. x in Z, -1 le dfrac{x}{5} 0
*Lm nhanh nha, mk cần gấp
Đọc tiếp
Tính:
a. 75% - 1\(\dfrac{1}{2}\).\(\dfrac{4}{3}\) + 1,5 : \(\dfrac{-9}{4}\)- (-\(\dfrac{1}{2}\))2
b. \(\dfrac{-4}{9}\).\(\dfrac{6}{13}\) + 7\(\dfrac{4}{9}\) - \(\dfrac{4}{9}:\dfrac{13}{7}-5\dfrac{4}{9}\) - 2
Tìm x:
a. \(\dfrac{7}{12}-\left(x+\dfrac{7}{10}\right):\dfrac{6}{5}=\dfrac{-5}{4}\)
b. x \(\in\) Z, -1 \(\le\) \(\dfrac{x}{5}\) < 0
*Lm nhanh nha, mk cần gấp
Tính:
\(\dfrac{\dfrac{1}{3}-\dfrac{1}{7}-\dfrac{1}{13}}{\dfrac{2}{3}-\dfrac{2}{7}-\dfrac{2}{13}}\)=?