\(\frac{x}{9}=\frac{8}{6}\Rightarrow\frac{x}{9}=\frac{4}{3}\Rightarrow x.3=9.4\Rightarrow x.3=36\Rightarrow x=36:3\Rightarrow x=12\)
Tìm x \(\left(1+\frac{1}{3}+\frac{1}{6}+\frac{1}{10}+\frac{1}{15}+\frac{1}{21}\right)\times X=\frac{8}{9}\)
Tìm x
X+\(\frac{3}{8}\)=\(\frac{4}{3}\)
X x\(\frac{1}{9}\)=\(\frac{21}{8}\)
X-\(\frac{5}{4}=\frac{7}{6}\)
X :\(\frac{8}{3}=5\)
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)\(\frac{11}{8}-\frac{5}{8}:\frac{3}{4}=\frac{11}{8}-\frac{5}{8}x\frac{4}{3}=\frac{11}{8}-\frac{10}{24}=\frac{23}{24}\) ......
\(\frac{5}{9}x\frac{9}{6}x\frac{7}{3}x\frac{6}{5}x\frac{3}{8}\)=
người nào giải nhanh và đúng nhất tớ sẻ tích
câu 1 ; 85\(\div\)96 = \(\frac{a}{96}\)
câu 2; x-\(\frac{2}{9}\)= \(\frac{1}{6}\)
câu 3 ; tìm x biết ;\(\frac{1}{6}\)+x =\(\frac{2}{9}\)
\(\frac{4}{7}:\frac{\frac{ }{6}}{8}x\frac{8}{9}\)
1. Tính nhanh
\(\frac{1}{2}\)x \(\frac{2}{3}\)x \(\frac{3}{4}\)x\(\frac{4}{5}\)x \(\frac{5}{6}\)x\(\frac{6}{7}\)x \(\frac{6}{7}\)x \(\frac{7}{8}\)x\(\frac{8}{9}\text{ }\)x \(\frac{9}{10}\)
\(\frac{1}{2}\): \(\frac{3}{2}\): \(\frac{5}{4}\)\(\frac{6}{5}\):\(\frac{7}{6}\):\(\frac{8}{7}\)
Tính:
a)\(\frac{6}{8}\)x\(\frac{7}{6}\)b) \(6\)x\(\frac{7}{9}\)c)\(\frac{4}{6}\):\(\frac{8}{2}\)
