Question

tìm số nguyên x biết:

\(\frac{-10}{-14}=\frac{5}{X-6}\)

Answer 1

\(\frac{-10}{-14}=\frac{5}{x-6}\)

\(x-6=5\div\frac{10}{14}\)

\(x-6=5\times\frac{14}{10}\)

\(x-6=7\)

\(x=7+6\)

\(x=13\)

Chúc bạn học tốt

Answer 2

\(\frac{-10}{-14}=\frac{5}{X-6}\)

\(\Leftrightarrow-10\left(X-6\right)=-14.5\)

\(\Leftrightarrow-10X+60=-70\)

\(\Leftrightarrow-10X=-130\)

\(\Leftrightarrow X=13\)

Vậy X = 13 

Answer 3

\(\frac{-10}{-14}\)= \(\frac{5}{x-6}\)

-10.(x-6)=5.-14

-10.(x-6)=-70

       (x-6)= -70: -10

       (x-6) =     7

        x=  7+6

        x= 13

Answer 4

Ta có: -10/-14 = 5/x-6

        =>-10.(X-6)= (-14).5

        =>-10.(X-6)= -70

        =>       (X-6)= -70/-10

        =>       X-6   = 7

       =>        X       = 13