=35,5(-3/4-1/4)+1/2*(-6/5)
=-35,5-0,6
=-36,1
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Tìm x, biết:
a) x+\(\dfrac{1}{6}\)=\(\dfrac{-3}{8}\) b) \(2-\left(\dfrac{3}{4}-x\right)=\dfrac{7}{12}\)
c) \(\dfrac{1}{2}x\)+\(\dfrac{1}{8}x=\dfrac{3}{4}\) d) 75%-\(1\dfrac{1}{2}+0,5:\dfrac{5}{12}-\left(\dfrac{-1}{2}\right)^2\)
Bài 4. Tìm x biết:
a. \(\dfrac{x}{5}=\dfrac{2}{5},\dfrac{3}{8}=\dfrac{6}{x},\dfrac{1}{9}=\dfrac{x}{27}\)
b. \(\dfrac{4}{x}=\dfrac{8}{6},\dfrac{3}{x-5}=\dfrac{-4}{x+2},\dfrac{x}{-2}=\dfrac{-8}{x}\)
\(\dfrac{x}{3}-\dfrac{1}{4}=\dfrac{-5}{6}\)
\(\dfrac{2x}{3}=\dfrac{6}{x}\)
\(\dfrac{x-1}{14}=\dfrac{4}{x}\)
\(\dfrac{-x}{8}=\dfrac{-50}{x}\)
Tìm x
4 tháng 1 2022 lúc 14:32
Tìm x, y, z, t ∈ Z biết:a, dfrac{5}{x}dfrac{-10}{12} b, dfrac{4}{-6}dfrac{x+3}{9} c, dfrac{x-1}{25}dfrac{4}{x-1} d, dfrac{x+1}{y}dfrac{-3}{5}e, dfrac{-12}{6}dfrac{x}{5}dfrac{-y}{3}dfrac{Z}{-17}dfrac{-t}{-9}h, dfrac{-24}{-6}dfrac{x}{3}dfrac{4}{y^2}dfrac{Z^3}{-2}
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Tìm x, y, z, t ∈ Z biết:
a, \(\dfrac{5}{x}=\dfrac{-10}{12}\) b, \(\dfrac{4}{-6}=\dfrac{x+3}{9}\) c, \(\dfrac{x-1}{25}=\dfrac{4}{x-1}\) d, \(\dfrac{x+1}{y}=\dfrac{-3}{5}\)
e, \(\dfrac{-12}{6}=\dfrac{x}{5}=\dfrac{-y}{3}=\dfrac{Z}{-17}=\dfrac{-t}{-9}\)
h, \(\dfrac{-24}{-6}=\dfrac{x}{3}=\dfrac{4}{y^2}=\dfrac{Z^3}{-2}\)
tìm x e Q
a) \(\dfrac{x+1}{3}+\dfrac{x+1}{4}+\dfrac{x+1}{5}=\dfrac{x+1}{6}\)
b) \(\dfrac{x+1}{2020}+\dfrac{x+2}{2019}=\dfrac{x+3}{2018}+\dfrac{x+4}{2017}\)
c) \(\dfrac{x+2}{327}+\dfrac{x+3}{326}+\dfrac{x+4}{325}+\dfrac{x+5}{324}+\dfrac{x+349}{5}=0\)
12 tháng 3 2022 lúc 14:17
Tính:
\(a,\left(\dfrac{5}{12}-\dfrac{3}{4}\right).\dfrac{-6}{5}+\dfrac{-7}{6}\)
\(b,\left(5\dfrac{1}{2}-5\right)^2+\dfrac{-1}{6}:\dfrac{5}{3}\)
\(c,75\%-1\dfrac{1}{2}+0,5:\dfrac{5}{12}\)
5 tháng 3 2022 lúc 14:55
tìm x
\(x-\dfrac{1}{2}=\dfrac{3}{4}\)
\(x+\dfrac{7}{8}=\dfrac{3}{4}\)
\(\dfrac{1}{2}.x-\dfrac{1}{4}=\dfrac{-1}{2}\)
\(\dfrac{1}{2}-\dfrac{5}{6}:x=\dfrac{2}{3}\)
Thực hiện phép tính: a) (6dfrac{4}{9} + 3 dfrac{7}{11}) - 4dfrac{4}{9} b) dfrac{1}{7}. dfrac{1}{5} + dfrac{1}{7} . dfrac{2}{5} + dfrac{1}{7} .dfrac{4}{5}c) 25% - 1dfrac{1}{2} . (-2019)o + 0,5 . dfrac{12}{5}
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Thực hiện phép tính: a) (6\(\dfrac{4}{9}\) + 3 \(\dfrac{7}{11}\)) - 4\(\dfrac{4}{9}\) b) \(\dfrac{1}{7}\). \(\dfrac{1}{5}\) + \(\dfrac{1}{7}\) . \(\dfrac{2}{5}\) + \(\dfrac{1}{7}\) .\(\dfrac{4}{5}\)
c) 25% - 1\(\dfrac{1}{2}\) . (-2019)o + 0,5 . \(\dfrac{12}{5}\)
19 tháng 2 2022 lúc 16:36
Tìm x biết :
\(x+\dfrac{1}{2}=\dfrac{33}{4}\)
\(\dfrac{5}{6}-x=\dfrac{1}{3}\)
\(x+\dfrac{4}{5}=\dfrac{-2}{3}\)