Question

Tìm x biết:

   (−72):63=−16:x

Đáp số: x= ???

Answer 1

x= (-72):63*(-16)=\(\dfrac{128}{7}\)

Answer 2

Ta có: (-72):63=-16:x

\(\Leftrightarrow\dfrac{-16}{x}=\dfrac{-72}{63}\)

\(\Leftrightarrow\dfrac{-16}{x}=\dfrac{-8}{7}\)

\(\Leftrightarrow x=\dfrac{-16\cdot7}{-8}=\dfrac{16\cdot7}{8}=14\)

Vậy: x=14

Answer 3

\(-\dfrac{72}{63}=-\dfrac{16}{x}\)

\(=>x=63\cdot-16:-72=14\)

Vậy x=14