\(\dfrac{1}{2}x=\dfrac{1}{6}+\dfrac{14}{6}=\dfrac{15}{6}\Leftrightarrow x=\dfrac{15}{6}:\dfrac{1}{2}=\dfrac{15}{3}=5\)
Đúng 0
Bình luận (0)
Các câu hỏi tương tự
NN
5 tháng 3 2022 lúc 14:55
tìm x
\(x-\dfrac{1}{2}=\dfrac{3}{4}\)
\(x+\dfrac{7}{8}=\dfrac{3}{4}\)
\(\dfrac{1}{2}.x-\dfrac{1}{4}=\dfrac{-1}{2}\)
\(\dfrac{1}{2}-\dfrac{5}{6}:x=\dfrac{2}{3}\)
Bài 1.(2,5 điểm)Tìm x, biết:a) left(2dfrac{1}{3}+3dfrac{1}{2}right).x-4dfrac{1}{6}+3dfrac{1}{2}b) left(1dfrac{1}{3}+3dfrac{1}{2}right).x4dfrac{1}{6}-3dfrac{1}{2}c) dfrac{1}{3}-dfrac{7}{8}.xdfrac{1}{4}d) dfrac{3}{2}.x+dfrac{1}{7}dfrac{7}{8}.dfrac{64}{49}e) 5dfrac{1}{2}-left(dfrac{1}{4}.x+dfrac{2}{5}right)25%
Đọc tiếp
Bài 1.(2,5 điểm)Tìm x, biết:
a) \(\left(2\dfrac{1}{3}+3\dfrac{1}{2}\right).x=-4\dfrac{1}{6}+3\dfrac{1}{2}\)
b) \(\left(1\dfrac{1}{3}+3\dfrac{1}{2}\right).x=4\dfrac{1}{6}-3\dfrac{1}{2}\)
c) \(\dfrac{1}{3}-\dfrac{7}{8}.x=\dfrac{1}{4}\)
d) \(\dfrac{3}{2}.x+\dfrac{1}{7}=\dfrac{7}{8}.\dfrac{64}{49}\)
e) \(5\dfrac{1}{2}-\left(\dfrac{1}{4}.x+\dfrac{2}{5}\right)=25\%\)
Tìm x biết: a) x + \(\dfrac{2}{3}=\dfrac{4}{27}\) b) \(\dfrac{3}{4}x-\dfrac{7}{3}=\dfrac{1}{4}x+\dfrac{1}{6}\)
c) \(\dfrac{13}{10}x-\dfrac{5}{2}=\dfrac{7}{2}\) d) (3\(x\) + 2) \(\left(\dfrac{-2}{5}x-7\right)=0\)
tìm x bt
a) \(\dfrac{2}{3}\)x - \(\dfrac{7}{6}\) = \(\dfrac{12}{7}\) - \(\dfrac{1}{2}\)
b) ( \(1\dfrac{1}{2}\) + \(\dfrac{5}{3}\) - \(\dfrac{1}{6}\) ) : x = \(\dfrac{3}{4}\) - \(\dfrac{1}{2}\)
\(\dfrac{x-1}{21}=\dfrac{3}{x+1}\)
\(2\dfrac{1}{2}x+x=2\dfrac{1}{17}\)
\(\left(x+\dfrac{1}{4}-\dfrac{2}{3}\right):\left(2+\dfrac{1}{6}-\dfrac{1}{4}\right)=\dfrac{7}{46}\)
\(2\dfrac{1}{3}x-1\dfrac{3}{4}x+2\dfrac{2}{3}=3\dfrac{3}{5}\)
Giúp mình với ! Mình cần gấp
Tìm x:a) dfrac{-3}{7}.xdfrac{3}{56}.dfrac{28}{9}b) x-dfrac{3}{16}dfrac{7}{15}:dfrac{3}{5}c) dfrac{2}{5}+dfrac{1}{5}.xdfrac{5}{6}d) dfrac{3}{4}x-dfrac{2}{5}xdfrac{3}{7}.dfrac{1}{6}+dfrac{5}{7}.dfrac{1}{6}*Lưu ý: Trình bày chi tiết kết quả.
Đọc tiếp
Tìm x:
a) \(\dfrac{-3}{7}\).x=\(\dfrac{3}{56}\).\(\dfrac{28}{9}\)
b) x-\(\dfrac{3}{16}\)=\(\dfrac{7}{15}\):\(\dfrac{3}{5}\)
c) \(\dfrac{2}{5}\)+\(\dfrac{1}{5}\).x=\(\dfrac{5}{6}\)
d) \(\dfrac{3}{4}\)x-\(\dfrac{2}{5}\)x=\(\dfrac{3}{7}\).\(\dfrac{1}{6}\)+\(\dfrac{5}{7}\).\(\dfrac{1}{6}\)
*Lưu ý: Trình bày chi tiết kết quả.
a,\(\dfrac{-10}{6}< \dfrac{x}{2}< \dfrac{-7}{6}\)
b,\(\dfrac{-3}{4}< \dfrac{x}{2}< \dfrac{-1}{2}\)
c, \(\dfrac{4}{-9}< \dfrac{-3}{x}< \dfrac{-4}{10}\)
\(\dfrac{1}{4}\) x \(\dfrac{1}{3}\) + \(\dfrac{1}{6}\) x \(\dfrac{1}{4}\) + \(\dfrac{1}{4}\) x \(\dfrac{1}{7}\)
Giúp mik với = <
Cảm ơn = >
KJ
28 tháng 2 2022 lúc 15:04
Tìm x biết:
\(a,\left(x-\dfrac{3}{4}\right)+50\%=\dfrac{1}{6}\)
\(b,\dfrac{1}{2}x-\dfrac{5}{6}x=\dfrac{7}{2}\)
\(c,\left(4-x\right)\left(3x+5\right)=0\)
\(d,\dfrac{x}{16}=\dfrac{50}{32}\)
\(e,\left(2x-3\right)+\dfrac{3}{2}=-\dfrac{1}{4}\)