Bài 1: Thực hiện phép tính
a, \(\frac{4}{9}.\frac{2}{6}\)
b, \(1\frac{1}{3}.\left(0,5\right)+\left(\frac{8}{15}-\frac{19}{30}\right):\frac{6}{15}\)
Bài 2: Tìm x, biết
a, \(\left(\frac{2}{7}.x+\frac{3}{7}\right):2\frac{1}{5}-\frac{3}{7}=1\)
HELP ME!!!!!!!!!!!!!
Bài 1: Thực hiện phép tính bằng cách hợp lí < nếu có thể >
a, \(\left(-1,5\right).\left(1+\frac{2}{3}\right)+1,4.\frac{15}{49}-\left(\frac{4}{5}+\frac{2}{3}\right):2\frac{1}{5}\)
b, \(\frac{7}{5}+\frac{4}{5}\left(\frac{5}{8}-\frac{7}{4}\right)+2014^0\)
c, \(1\frac{3}{25}+\frac{17}{19}-\frac{3}{25}+0,9+\frac{2}{19}\)
d, \(-\frac{5}{9}.\frac{6}{13}+\frac{-5}{9}.\frac{7}{23}+\frac{5}{23}:\frac{9}{7}\)
Bài 2: Tìm x, biết
a, 20%x + 0,4x = 4,5
b, \(\left(3\frac{1}{2}-2\left|x-1\right|\right).2\frac{2}{3}=5\frac{1}{3}\)
HELP MEEEEE
Bài 1: Thực hiện phép tính bằng cách hợp lí ( nếu có thể )
a, \(\left(-1,5\right).\left(1+\frac{2}{3}\right)+1,4.\frac{15}{49}-\left(\frac{4}{5}+\frac{2}{3}\right):2\frac{1}{5}\)
b, \(\frac{7}{5}+\frac{4}{5}\left(\frac{5}{8}-\frac{7}{4}\right)+2014^0\)
c, \(1\frac{3}{25}+\frac{17}{19}-\frac{3}{25}+0,9+\frac{2}{19}\)
d, \(-\frac{5}{9}.\frac{6}{13}+\frac{-5}{9}.\frac{7}{23}+\frac{5}{23}:\frac{9}{7}\)
Bài 2: Tìm x, biết:
a, 20%x + 0,4x = 4,5
b, \(\left(3\frac{1}{2}-2\left|x-1\right|\right).2\frac{2}{3}=5\frac{1}{3}\)
HELP ME!
\(\frac{9}{19}-\frac{4}{5}:\frac{2}{5}b,\frac{2}{9}:\frac{2}{3}^x\frac{1}{2}\)
a, \(\left(12-\frac{7}{18}-10\frac{13}{18}\right):x-1\frac{7}{13}=1\frac{2}{3}\)
b,\(\left[\left(6\frac{3}{7}-\frac{0,75x-2}{0,35}\right).2,8+1,75\right]:0,05=235\)
c.\(\frac{3-x}{5-x}=\left(\frac{3}{5}\right)^2\)
d,\(\left(1-\frac{3}{10}-x\right):\left(\frac{19}{10}-1-\frac{2}{5}\right)+\frac{4}{5}=1\)
e,\(\left(12\frac{7}{18}-10\frac{13}{18}\right):x-1\frac{7}{33}:\frac{8}{11}=1\frac{2}{3}\)
các bạn ơi giúp tớ với
Tìm số nguyên x biết :
a) \(\frac{3}{x-5}\) = \(\frac{-4}{x+2}\)
b) \(\frac{-x}{4}\) = \(\frac{-9}{x}\)
c) \(\frac{-35}{7}\) < x \(\le\) -1
d) \(\frac{-30}{5}\) < x < \(\frac{-45}{9}\)
Tìm số nguyên x biết :
a) \(\frac{3}{x-5}\) = \(\frac{-4}{x+2}\)
b) \(\frac{-35}{7}\)< x\(\le\) -1
c) \(\frac{-30}{5}\)<x< \(\frac{-45}{9}\)
d) \(\frac{-x}{4}\)=\(\frac{-9}{x}\)
Tìm số nguyên x biết
a) \(\frac{3}{x-5}\) = \(\frac{-4}{x+2}\)
b) \(\frac{-x}{4}\) = \(\frac{-9}{x}\)
c) \(\frac{-35}{7}\) < x\(\le\) -1
d) \(\frac{-30}{5}\)<x<\(\frac{-45}{9}\)
Tìm số nguyên x biết :
a) \(\frac{3}{x-5}\) = \(\frac{-4}{x+2}\)
b) \(\frac{-x}{4}\) = \(\frac{-9}{x}\)
c) \(\frac{-35}{7}\) < x \(\le\) -1
d) \(\frac{-30}{5}\) < x < \(\frac{-45}{9}\)