Question

\(\frac{12+x}{43-x}=\frac{2}{3}\)

VERY GẤP !!!!!!!!!!!

Answer 1

\(\frac{12+x}{43-x}=\frac{2}{3}\)  
\(\Rightarrow\frac{\left(12+x\right)\times3}{\left(43-x\right)\times3}=\frac{2\times\left(43-x\right)}{\left(43-x\right)\times3}\)  

\(\Rightarrow\frac{36+3x}{129-3x}=\frac{86-2x}{129-3x}\)  

\(\Rightarrow\frac{36+3x}{129-3x}-\frac{86-2x}{129-3x}=0\)  

\(\Rightarrow\frac{36+3x-86+2x}{129-3x}\)  

\(\Rightarrow\frac{-50+5x}{129-3x}\)  

k cho minh

Answer 2

2/3 = 22/33

Vậy x = 22 - 12 = 10

Chúc bạn hok tốt nha!

Answer 3

= 0 hết nhé