a)1/1/3+2/1/2=4/3+5/2=8/6+15/6=23/6
b)3/2/5-1/1/10=17/5-11/10=34/10-11/10=23/10
c)3/1/2*1/1/7=7/2*8/7=4
d)4/1/6:2/1/3=25/6:7/3=25/6*3/7=25/14
\(1\frac{1}{3}+2\frac{1}{2}=\frac{4}{3}+\frac{5}{2}=\frac{8}{6}+\frac{15}{6}=\frac{23}{6}\)
a)1/1/3+2/1/2=4/3+5/2=8/6+15/6=23/6
b)3/2/5-1/1/10=17/5-11/10=34/10-11/10=23/10
c)3/1/2*1/1/7=7/2*8/7=4
d)4/1/6:2/1/3=25/6:7/3=25/6*3/7=25/14
\(1\frac{1}{3}+2\frac{1}{2}=\frac{4}{3}+\frac{5}{2}=\frac{8}{6}+\frac{15}{6}=\frac{23}{6}\)
\(A=\left(6:\frac{3}{5}-1\frac{1}{6}x\frac{6}{7}\right):\left(4\frac{1}{5}x\frac{10}{11}+5\frac{2}{11}\right)\)\(B=\left(1-\frac{1}{2}\right)x\left(1-\frac{1}{4}\right)x.......x\left(1-\frac{1}{2015}\right)x\left(1-\frac{1}{2016}\right)\)
\(C=5\frac{9}{10}:\frac{3}{2}-\left(2\frac{1}{3}x4\frac{1}{2}-2x2\frac{1}{3}\right):\frac{7}{4}\)
Tính:
a,\(\frac{\left(3+\frac{1}{6}\right)-\frac{2}{5}}{\left(5-\frac{1}{6}\right)+\frac{7}{10}}\)
b,\(\frac{\left(4,08-\frac{2}{25}\right):\frac{4}{17}}{\left(6\frac{5}{9}-3\frac{1}{4}\right)x2\frac{2}{7}}\)
c,\(\frac{2-\frac{1}{4}+\frac{1}{3}-\frac{3}{5}}{3-\frac{1}{5}-\frac{5}{3}}\)
\(\frac{10+\frac{9}{2}+\frac{8}{3}+\frac{7}{4}+ \frac{6}{5}+\frac{5}{6}+\frac{4}{7}+\frac{3}{8}+\frac{2}{9}+\frac{1}{10}}{\frac{1}{2}+\frac{1}{3}+\frac{1}{4}+...+\frac{1}{10}+\frac{1}{11}}\)
tính nhanh và ko quy đồng
a] C = \(\frac{5}{2\cdot1}+\frac{4}{1\cdot11}+\frac{3}{11\cdot2}+\frac{1}{2\cdot15}+\frac{13}{15\cdot4}\)
b] B = \(\frac{6}{3\cdot5}+\frac{6}{5\cdot7}+\frac{6}{7\cdot9}+.....+\frac{6}{97\cdot99}\)
So sánh:\(\frac{\frac{\frac{1}{2}}{\frac{3}{4}}}{\frac{\frac{5}{6}}{\frac{7}{8}}}+\frac{\frac{\frac{8}{7}}{\frac{6}{5}}}{\frac{\frac{4}{3}}{\frac{2}{1}}}\) và\(\frac{\frac{\frac{1}{2}}{\frac{3}{4}}+\frac{\frac{8}{7}}{\frac{6}{5}}}{\frac{\frac{5}{6}}{\frac{7}{8}}+\frac{\frac{4}{3}}{\frac{2}{1}}}\)và \(\frac{\frac{\frac{1}{2}+\frac{8}{7}}{\frac{3}{4}+\frac{6}{5}}}{\frac{\frac{5}{6}+\frac{4}{3}}{\frac{7}{8}+\frac{2}{1}}}\)và\(\frac{\frac{\frac{1+8}{2+7}}{\frac{3+6}{4+5}}}{\frac{5+4}{\frac{6+3}{2+1}}}\)
bài 1: tính phân số
a) \(\frac{2}{3}+\frac{3}{4}+\frac{1}{6}=\) b) \(2\frac{1}{10}-\frac{3}{4}-\frac{2}{5}=\) c) \(\frac{1}{3}-\frac{1}{5}=\) d) \(\frac{1}{5}-\frac{1}{7}=???\)
ai đúng k cho người đó nếu qua 7:30 chưa ai đúng chưa k mà phải nhanh tay trả lời nữa ^^
Tính :
\(a,3\frac{1}{2}+5\frac{1}{3}\)
\(b,4\frac{1}{4}-2\frac{2}{3}\)
\(c,7\frac{2}{9}\times1\frac{3}{5}\)
\(d,6\frac{1}{4}\div2\frac{1}{3}\)
ĐỀ: TÌM X
\(a,\frac{7}{5}:x+\frac{3}{2}=\frac{16}{3}\)
\(b,x:\frac{1}{5}+\frac{1}{7}=\frac{3}{5}.\frac{18}{21}\)
\(c,x-1\frac{1}{3}:2=\frac{5}{7}\)
\(d,x+2\frac{3}{5}.\frac{1}{6}=\frac{35}{36}\)
\(e,\left(x+\frac{3}{2}\right):2=\frac{7}{10}+\frac{1}{5}\)
ai trả lời được mik tik cho
a) \(x+\frac{7}{15}=1\frac{1}{20}\)
b) \(\left(3\frac{1}{2}-x\right)\cdot1\frac{1}{4}=\frac{15}{16}\)
c) \(1\frac{1}{5}x+\frac{2}{3}x=\frac{56}{125}\)
d)\(x+2\frac{1}{4}x=\frac{15}{8}\)
e)\(60\%x+0,4x+x:3=2\)
GIÚP MÌNH NHOA CÁC BẠN