Question

a/27 = -5/9=-45/7

Ai làm đúng mik thả tim nhé!

Answer 1

\(\dfrac{a}{27}=-\dfrac{5}{9}\)

\(\Rightarrow a=\dfrac{27.5}{-9}=-15\)

Answer 2

\(\dfrac{a}{27}=-\dfrac{45}{7}\)

\(\Rightarrow a=\dfrac{-45.27}{7}=-\dfrac{1215}{7}\)

Answer 3

\(\dfrac{a}{27}=\dfrac{-5}{9}=\dfrac{-45}{7}\\\rightarrow a\cdot9\cdot\left(-45\right)=27\cdot\left(-5\right)\cdot7\\ \rightarrow a\cdot9\cdot\left(-45\right)=-945\\ \rightarrow9a=\left(-945\right):\left(-45\right)\\ \rightarrow9a=21\\ \rightarrow a=\dfrac{21}{9}\)

Answer 4

a=-15

Answer 5

\(=>\dfrac{a}{27}=\dfrac{-45}{7}\)

\(=>a=\left(-45.27\right):\left(7\right)=\dfrac{1215}{7}\)

Answer 6

mik ghi nhầm đề bài ạ

là -45/b mới đúng ạ