Question

Tìm phần nguyên x của hỗn số biết rằng :

a, \(\frac{561}{143}< x\frac{12}{13}< \frac{1463}{247}\)

b, \(x\frac{3}{4}=\frac{21989}{7996}\)

Answer 1

a, \(3\frac{12}{13}< x\frac{12}{13}< 5\frac{12}{13}\Rightarrow x=4\)

b, \(x\frac{3}{4}=\frac{21989}{7996}=\frac{11}{4}=2\frac{3}{4}\Rightarrow x=2\)

~ Hok tốt ~

Answer 2

Trả lời : 

a)x=4

b)x=2

\(\downarrow\)

Answer 3

a) \(\frac{561}{143}< x\frac{12}{13}< \frac{1463}{247}\)

\(\Rightarrow3\frac{12}{13}< x\frac{12}{13}< 5\frac{12}{13}\)

\(\Rightarrow x=4\)

b) \(x\frac{3}{4}=\frac{21989}{7996}\)

\(\Rightarrow x\frac{3}{4}=2\frac{3}{4}\)

\(\Rightarrow x=2\)

~ Hok tốt ~

Answer 4

#)Giải :

a) Ta có :

\(\frac{561}{143}\approx3,923\)

\(\frac{12}{13}\approx0,923\)

\(\frac{1463}{247}\approx5,923\)

\(3,923:0,923\approx4,25\)

\(5,923:0,92\approx6,42\)

=> x là số nguyên khi 4,25 < x < 6,42

=> x = 5

Answer 5

a)\(3\frac{12}{13}< x\frac{12}{13}< 5\frac{12}{13}\Rightarrow4\)

b) \(x\frac{3}{4}=\frac{21929}{7996}=\frac{11}{4}=2\frac{3}{4}\Rightarrow x=2\)

~ Học tốt ~

Answer 6

\(a,\frac{561}{143}< x\frac{12}{13}< \frac{1463}{247}\)

\(\Rightarrow x=4.\)

\(b,x\frac{3}{4}=\frac{21989}{7996}\Rightarrow x=2.\)