3/5-2x/=7,5-(-4,5) \(\Rightarrow\)5-2x=4 hoặc 5-2x=-4 Vậy x=0.5 hoặc 4.5
\(\Rightarrow\)3/5-2x/=7,5+4,5 \(\Rightarrow\) 2x=5-4 hoặc2x=5-(-4) Nhớ tích nha!!!!!
\(\Rightarrow\)3/5-2x/=12 \(\Rightarrow\)2x=1 hoặc 2x=9
\(\Rightarrow\)/5-2x/=12:3 \(\Rightarrow\)x=1:2 hoặc x=9:2
\(\Rightarrow\)/5-2x/=4 \(\Rightarrow\)x=0.5 hoặc x=4.5
\(3\left|5-2x\right|=7,5+4,5\)
\(3\left|5-2x\right|=12\)
\(\left|5-2x\right|=12\div3=4\)
\(\Rightarrow5-2x=4\)hoặc \(5-2x=-4\)
\(5-2x=4\Rightarrow2x=5-4=1\Rightarrow x=\frac{1}{2}\)
\(5-2x=-4\Rightarrow2x=5+4=9\Rightarrow x=\frac{9}{2}=4,5\)
