\(\frac{11}{10,5}=\frac{6,32}{x}\)\(\Rightarrow\) 11x = 10,5 . 6,32

                              11x = 66,36

                                  x = 6,032(72)

11*6,32=10,5*x=69,52

x=69,52/10,5=6,6

\(\frac{11}{10,5}=\frac{6,32}{x}\Rightarrow x=\frac{6,32.10,5}{11}=\frac{1659}{275}\)

\(\frac{11}{10,5}=\frac{6,32}{x}\)

\(\Rightarrow11.x=6,32.10,5\)

\(\Rightarrow11.x=66,36\)

\(\Rightarrow x=66,36:11\)

\(\Rightarrow x=\frac{1659}{275}\)

Vậy \(x=\frac{1659}{275}.\)

Chúc bạn học tốt!

a) \(\frac{11}{10,5}=\frac{6,32}{-x}\)

\(6,32:\frac{11}{10,5}=x\)

\(\frac{1659}{275}=x\)

b) \(\frac{x-1}{x+5}=\frac{6}{7}\)

\(\Rightarrow7x-7=6x+30\)

\(7x-6x=30+7\)

\(x=37\)

c) \(\frac{x^2}{6}=\frac{24}{25}\)

\(x^2=\frac{144}{25}\)

\(x=\frac{12}{5}\)

d) \(x:0,16=9:x\)

\(\frac{x}{0,16}=\frac{9}{x}\)

\(x^2=1,44\)

\(x=1,2\)

= 3 x 32,1 - 3 x 6,32 + 7 x 32,1 + 3 x 6,32

= 32,1 x (3 + 7) + 6,32 x (3 - 3)

= 321 + 0

=321 

\(\dfrac{7,5+1,5+\dfrac{5}{4}+\dfrac{5}{11}}{10,5+2,1+\dfrac{7}{4}+\dfrac{7}{11}}+x=\dfrac{6}{7}\)

\(\dfrac{9+\dfrac{5}{4}+\dfrac{5}{11}}{\dfrac{63}{5}+\dfrac{7}{4}+\dfrac{7}{11}}+x=\dfrac{6}{7}\)

\(\dfrac{\dfrac{36}{4}+\dfrac{5}{4}+\dfrac{5}{11}}{\dfrac{252}{20}+\dfrac{35}{20}+\dfrac{7}{11}}+x=\dfrac{6}{7}\)

\(\dfrac{\dfrac{41}{4}+\dfrac{5}{11}}{\dfrac{287}{20}+\dfrac{7}{11}}+x=\dfrac{6}{7}\)

\(\dfrac{\dfrac{451}{44}+\dfrac{20}{44}}{\dfrac{3157}{220}+\dfrac{140}{220}}+x=\dfrac{6}{7}\)

\(\dfrac{\dfrac{471}{44}}{\dfrac{3297}{220}}+x=\dfrac{6}{7}\)

\(\dfrac{5}{7}+x=\dfrac{6}{7}\)

\(x=\dfrac{6}{7}-\dfrac{5}{7}\)

\(x=\dfrac{1}{7}\)

1.321

2.19048.6

3.7610

\(=3\cdot32.1-3\cdot6.32+7\cdot32.1+3\cdot0.32\)

\(=32.1\cdot10-3\cdot6=321-18=303\)

C=303

Tôi cũng có đề bài đó nhưng là 32,1-6,32

Kết quả là  303