Question

Bài 2: Tìm X

X x (một phần hai + một phần ba + một phần bốn) = 425

Answer 1

X x (1/2+1/3+1/4) = 425

X x 13/12 = 425

X              = 425 : 13/12

X              = 425 x 12/13

X              = 5100/13

Answer 2

x(1/2 +1/3+1/4)=425

x×13/12=425

x=425÷13/12

x=425×12/13

x=329/4/13

Answer 3

\(x\times\left(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}\right)=425\)

\(\Leftrightarrow x\times\left(\frac{6}{12}+\frac{4}{12}+\frac{3}{12}\right)=425\)

\(\Leftrightarrow x\times\frac{13}{12}=425\)

\(\Leftrightarrow x=425:\frac{13}{12}\)

\(\Leftrightarrow x=425\times\frac{12}{13}\)

\(\Leftrightarrow x=\frac{5100}{13}\)

Vậy\(x=\frac{5100}{13}\)

Matcha

Answer 4

\(x.\left(\frac{1}{2}+\frac{1}{3}+\frac{1}{4}\right)=425\)

\(\Leftrightarrow x.\frac{13}{12}=425\)

\(\Leftrightarrow x=\frac{5100}{13}\)