Question

a,\(\dfrac{x}{-3}\text{=}\dfrac{-5}{15}\)                                                b,\(\dfrac{1173}{x}\text{=}\dfrac{3}{5}\) 

c,\(\dfrac{2}{x}\text{=}\dfrac{y}{15}\text{=}\dfrac{-25}{75}\)

Answer 1

giúp mik nhoa mik đag cần gấp hihi

Answer 2

a) \(x=\dfrac{-3.\left(-5\right)}{15}=1\)

b) \(x=\dfrac{5.1173}{3}=1955\)

 

Answer 3

c) Tách làm 2 phép tính

(1) \(\dfrac{y}{15}=\dfrac{-25}{75}\rightarrow y=\dfrac{-25.15}{75}=-5\)

(2) \(\dfrac{2}{x}=\dfrac{-25}{75}\rightarrow x=\dfrac{75.2}{-25}=-6\)

Answer 4

a) \(\dfrac{x}{-3}=\dfrac{-5}{15}\) 

\(\Rightarrow x=\dfrac{-3.-5}{15}=1\) 

b) \(\dfrac{1173}{x}=\dfrac{3}{5}\) 

\(\Rightarrow x=\dfrac{1173.5}{3}=1955\) 

c) \(\dfrac{2}{x}=\dfrac{y}{15}=\dfrac{-25}{75}\) 

\(\Rightarrow x=\dfrac{2.75}{-25}=-6\) 

\(\Rightarrow y=\dfrac{15.-25}{75}=-5\)