\(\dfrac{3}{7}\)x\(\dfrac{4}{5}\)=\(\dfrac{3\text{x}4}{7\text{x}5}\)=\(\dfrac{12}{35}\)
CHÚC BẠN HỌC TỐT!!!!!!
\(\dfrac{3}{7}\times\dfrac{4}{5}=\dfrac{3\times4}{7\times5}\dfrac{12}{35}\)
\(\dfrac{3}{7}.\dfrac{4}{5}=\dfrac{3.4}{7.5}=\dfrac{12}{35}\)
\(\dfrac{3}{7}\)x\(\dfrac{4}{5}\)=\(\dfrac{3\text{x}4}{7\text{x}5}\)=\(\dfrac{12}{35}\)
CHÚC BẠN HỌC TỐT!!!!!!
\(\dfrac{3}{7}\times\dfrac{4}{5}=\dfrac{3\times4}{7\times5}\dfrac{12}{35}\)
\(\dfrac{3}{7}.\dfrac{4}{5}=\dfrac{3.4}{7.5}=\dfrac{12}{35}\)
\(\left(\dfrac{2}{3}+\dfrac{2}{13}+\dfrac{2}{11}+\dfrac{2}{6}\right)\) \(\left(\dfrac{5}{4}+\dfrac{5}{7}+\dfrac{5}{6}+\dfrac{5}{11}\right)\)
___________________ X ___________________
\(\left(\dfrac{4}{3}+\dfrac{4}{13}+\dfrac{4}{11}+\dfrac{4}{6}\right)\) \(\left(\dfrac{9}{4}+\dfrac{9}{7}+\dfrac{9}{6}\dfrac{9}{11}\right)\)
\(\dfrac{-5}{4}\) - x = \(\dfrac{7}{12}\) + \(\dfrac{-1}{3}\)
2. tìm x
a. \(\dfrac{x}{8}\)=\(\dfrac{-9}{6}\)
b. \(\dfrac{4}{9}\)+\(\dfrac{7}{3}\):x=\(\dfrac{1}{5}\)
c. \(\dfrac{-5}{9}\)- x=\(\dfrac{4}{3}\)
d. x +\(\dfrac{4}{17}\)=\(\dfrac{2}{34}\)
e. \(\dfrac{3}{4}\).x=\(\dfrac{7}{8}\)
f. \(5\dfrac{4}{7}\): x=11
\(\dfrac{-3}{4}\) + \(\dfrac{2}{7}\) + \(\dfrac{-1}{4}\) +\(\dfrac{3}{5}\) +\(\dfrac{5}{7}\)
1. Tìm x, biết:
a, \(1\dfrac{3}{5}\) + \(\dfrac{\dfrac{2}{7}+\dfrac{2}{17}+\dfrac{2}{37}}{\dfrac{5}{7}+\dfrac{5}{17}+\dfrac{5}{37}}\) . x = \(\dfrac{16}{5}\)
b, (\(\dfrac{1}{24.25}\) + \(\dfrac{1}{25.26}\) + . . . + \(\dfrac{1}{39.40}\) ) . 120 + x. \(\dfrac{1}{3}\) = -4
c, \(\left|x-\dfrac{1}{3}\right|\) . 2 + \(\dfrac{4}{5}\) = 0,24
d, \(\dfrac{24}{7x-3}\) = \(\dfrac{-4}{25}\)
e, ( 50% x + \(5\dfrac{1}{4}\) ) , \(\dfrac{-2}{3}\) = \(2\dfrac{5}{6}\)
f, \(1\dfrac{1}{3}\) - 25%\(\dfrac{-5}{12}\) + 2x = 1,6 : \(\dfrac{3}{5}\)
2. tìm x
a. \(\dfrac{6}{5}\)- x =\(\dfrac{-3}{4}\)
b. \(\dfrac{3}{4}\)x - \(\dfrac{2}{3}\)x = \(\dfrac{-7}{12}\)
c. | \(\dfrac{2}{3}\)x - \(\dfrac{1}{2}\)| -1 = \(\dfrac{5}{6}\)
d. 3,2 x - (\(\dfrac{4}{5}\)+\(\dfrac{2}{3}\)) : \(3\dfrac{2}{3}\)=\(\dfrac{7}{20}\)
x : \(\dfrac{2}{3}\) = 150 \(\dfrac{35}{9}\) : x = \(\dfrac{35}{6}\)
\(\dfrac{49}{7}\) : x =\(\dfrac{49}{5}\)
1 - { 5\(\dfrac{4}{9}\) + x - 7\(\dfrac{7}{18}\) }: 15\(\dfrac{3}{4}\) = 0
1. tìm x
a. x+\(\dfrac{3}{4}\)=\(\dfrac{1}{2}\)
b. \(\dfrac{5}{3}\). x=\(\dfrac{4}{7}\)
c. \(\dfrac{2}{3}\): x=\(\dfrac{-1}{4}\)
d. \(\dfrac{5}{9}\)- x=\(\dfrac{4}{3}\)
e.x +\(\dfrac{4}{17}\)=\(\dfrac{2}{34}\)
f. \(3\dfrac{4}{7}\): x=11
\(\dfrac{\dfrac{3}{7}-\dfrac{3}{11}+\dfrac{3}{13}}{\dfrac{5}{7}-\dfrac{5}{11}+\dfrac{5}{13}}+\dfrac{\dfrac{1}{2}-\dfrac{1}{3}+\dfrac{1}{4}}{\dfrac{5}{4}-\dfrac{5}{6}+\dfrac{5}{8}}\)
THỰC HIỆN PHÉP TÍNH NHA MN
tìm x,y thuộc z
a. \(\dfrac{-1}{4}:\dfrac{-3}{4}+\dfrac{1}{2}< x< \dfrac{7}{8}-\dfrac{1}{2}:\dfrac{-5}{6}\)