Question

x/15= y+42/25=240/300

Giúp mình với

Answer 1

\(\dfrac{x}{15}=y+\dfrac{42}{25}=\dfrac{240}{300}\)

\(\dfrac{x}{15}=y+\dfrac{42}{25}=\dfrac{4}{5}\)

\(\dfrac{x}{15}=y=\dfrac{4}{5}-\dfrac{42}{25}\)

\(\dfrac{x}{15}=y=\dfrac{-22}{25}\)

Vậy \(\dfrac{x}{15}=\dfrac{-22}{25}\)

từ đây bn tự tính nha

Answer 2

\(\dfrac{x}{15}=\dfrac{240}{300}\Rightarrow x.300=15.240\)

\(\Rightarrow x.300=18000hayx=60\)

\(\dfrac{y+42}{25}=\dfrac{240}{300}\Rightarrow(y+42)\times300=25\times240\)

Nên \((y+42)\times300=6000\)

\(\Rightarrow y+42=20hayy=-22\)

Vậy x=60,y=-22