Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
= 1 x 3 + 2 x 3 + 3 x 3 + 4 x 3 + ...+ 9 x 3
= 3 x ( 1 + 2 + 3 + 4 + ...+ 9)
= 3 x 45
= 135
a)15/8:9/8/7/8;3/8
b)3/5;7/15;4/15;8/45
c)9/4;47/10;4/5;3/8
a) \(\frac{3}{8},\frac{15}{8},\frac{9}{8},\frac{7}{8}\)
Từ lớn -> bé:
=>\(\frac{15}{8},\frac{9}{8},\frac{7}{8},\frac{3}{8}\)
b) \(\frac{4}{15},\frac{3}{5},\frac{8}{45},\frac{7}{15}=\frac{12}{45},\frac{27}{45},\frac{8}{45},\frac{21}{45}\)
Từ lớn -> bé:
=> \(\frac{3}{5},\frac{7}{15},\frac{4}{15},\frac{8}{45}\)
c) \(\frac{3}{8},\frac{4}{5},\frac{47}{40},\frac{9}{4}=\frac{15}{40},\frac{32}{40},\frac{47}{40},\frac{90}{40}\)
Từ lớn -> bé:
=>\(\frac{9}{4},\frac{47}{40},\frac{4}{5},\frac{3}{8}\)
1+2+3+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9+1028=(1+2+3+4+5+6+7+8+9)x3+1028=45x3+1028=135+1028=1163
9+8+9+5+7+4+3+5+5+9+8/5
=9+8+9+5+7+4+3+5+5+9+1,6
=17+9+5+7+4+3+5+5+9+1,6
=26+5+7+4+3+5+5+9+1,6
=31+7+4+3+5+5+9+1,6
=38+4+3+5+5+9+1,6
=42+3+5+5+9+1,6
=45+5+5+9+1,6
=50+5+9+1,6
=55+9+1,6
=64+1,6
=65,6
9+8+9+5+7+4+3+5+5+9+8/5
=9+8+9+5+7+4+3+5+5+9+1,6
=17+9+5+7+4+3+5+5+9+1,6
=26+5+7+4+3+5+5+9+1,6
=31+7+4+3+5+5+9+1,6
=38+4+3+5+5+9+1,6
=42+3+5+5+9+1,6
=45+5+5+9+1,6
=50+5+9+1,6
=55+9+1,6
=64+1,6
=65,6
\(a.\frac{7}{5}+\frac{4}{7}-\frac{9}{10}=\frac{98}{70}+\frac{40}{70}-\frac{63}{70}=\frac{98+40-63}{70}=\frac{75}{70}\)\(=\frac{15}{14}\)
\(b.2+\frac{3}{4}x\frac{8}{5}=2+\frac{6}{5}=\frac{16}{5}\)
\(c.\frac{9}{8}-\frac{6}{5}:\frac{8}{5}=\frac{9}{8}-\frac{6}{5}x\frac{5}{8}=\frac{9}{8}-\frac{6}{8}=\frac{3}{8}\)
vậy p bằng.....
8/9 + p = 8/4
p = 8/4 - 8/9
p = 10/9