tìm x\(\frac{15}{17}x\frac{51}{5}< X< \frac{67}{9}+\frac{35}{9}\)
Tìm x biết \(\frac{x}{17}\) + \(\frac{19}{34}\)=2\(\frac{1}{2}\)
\(\frac{15}{17}x\frac{45}{13}-\frac{15}{17}x\frac{10}{13}-\frac{9}{13}x\frac{15}{17}-\frac{15}{17}\)
tìm x
x - 58 : 2 = 17
( x - 58 ) : 2 = 17
125 + ( 145 - x ) = 175
X x \(\frac{2}{5}=\frac{4}{5}:\frac{2}{3}\)
x + 3,75 + 4x = 24,25
( ai làm đúng mình tick cho )
(\(\frac{2}{5}\)+\(\frac{4}{7}\)) : x=\(\frac{17}{5}\)
tìm x
Tính bằng cách thuận tiện nhất .
\(\frac{39}{16}:\frac{5}{8}-\frac{17}{16}:\frac{5}{18}+\frac{4}{5}\)
\(\frac{16}{17}x\frac{12}{19}+\frac{16}{17}x\frac{7}{19}-\frac{2}{3}\)
\(\frac{34}{7}x\frac{5}{9}\)
Đúng ghi Đ, sai ghi S vào chỗ chấm:
a) \(\frac{3}{7}+\frac{1}{3}x\frac{3}{7}=\frac{16}{21}x\frac{3}{7}=\frac{16}{49}\) ......
b)\(\frac{5}{9}+\frac{1}{5}x\frac{5}{6}=\frac{5}{9}x\frac{1}{6}=\frac{13}{18}\) ......
c)\(\frac{13}{9}-\frac{7}{9}:\frac{2}{3}=\frac{6}{9}:\frac{3}{2}=1\) ......
d)\(\frac{11}{8}-\frac{5}{8}:\frac{3}{4}=\frac{11}{8}-\frac{5}{8}x\frac{4}{3}=\frac{11}{8}-\frac{10}{24}=\frac{23}{24}\) ......
4 x 4 = ?
4 x 1 = ?
4 x 5 = ?
\(\frac{32}{65}\)+ \(\frac{34}{34}\)+ \(\frac{21}{11}\)
4 x 8 = ?
4 x 9 = ?
9 x 9 = ?
\(\frac{32}{72}\)+\(\frac{51}{11}\)+ \(\frac{55}{55}\)