3 phan 2 cong 4phan 3
Những câu hỏi liên quan
4phan 3 tru 11 phan 15
\(\frac{4}{3}-\frac{11}{15}\)
\(=\frac{20}{15}-\frac{11}{15}\)
\(=\frac{20-11}{15}\)
\(=\frac{9}{15}\)
\(=\frac{3}{5}\)
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\(\frac{4}{3}-\frac{11}{15}\)
\(=\frac{20-11}{15}\)
\(=\frac{9}{15}=\frac{3}{5}\)
kb nha
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Xem thêm câu trả lời
tim z,y,z thoa
can x cong can tat ca y tru 1 cong can tat ca z tru 2 bang 1 phan 2 ( x cong y cong z)
tim GTN cua B bang 1 phan x tru can x cong 1
tim x thuoc z de can x cong 1 phan can 3 tru 3 la so nguyen
tinh tong T bang 1 phan can 1 cong can 2 cong 1 phan can 2 cong can 3 cong ... cong den 1 phan can 99 cong can 100
Cho a=1 Phan 11 +1phan 12+1phan 13+...+1phan 70
Chứng minh A>4phan 3
mot nha may co 3 phan xuong . so cong nhan cua phan xuong 1 bang 36% tong so cong nhan nha may so cong nhan cua phan xuong 2 bang 3/5 so cong nhan cua phan xuong 3 . biet so cong nhan cua phan xuong 3 hon so cong nhan cua phan xuong 1 la 18 nguoi . tinh so nguoi moi phan xuong
3 phan 1 nhan 4 cong 3 phan 4 nhan 7 cong 3 phan 7 nhan 10 cong ... cong 3 phan 40 nhan 43
#)Giải :
Gọi tổng trên là A
\(A=\frac{3}{1.4}+\frac{3}{4.7}+\frac{3}{7.10}+...+\frac{3}{40.43}\)
\(A=3-\frac{3}{4}+\frac{3}{4}-\frac{3}{7}+\frac{3}{7}-\frac{3}{10}+...+\frac{3}{40}-\frac{3}{43}\)
\(A=3-\frac{3}{43}\)
\(A=3\frac{3}{43}=\frac{132}{43}\)
#~Will~be~Pens~#
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viet cac ti so phan tram 50phan tram ;4phan tram;120phan tram ra so thap phan
\(50\%=\frac{50}{100}=0,5\)
\(4\%=\frac{4}{100}=0,04\)
\(120\%=\frac{120}{100}=1,2\)
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viet 4phan so thap phan lon hon 1/2 va co mau so la 10
4 cong x cong 3 phan 4 bang 17 phan 2
4 cong x cong 3 phan 4 bang 17 phan 2
4 + X + \(\frac{3}{4}\)= \(\frac{17}{2}\)
<=> X = \(\frac{17}{2}\)-\(\frac{3}{4}\)- 4
<=> X = \(\frac{15}{4}\)
vậy X =\(\frac{15}{4}\)
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