x.100+50.100=2500
100.(x+50)=2500
x+50=2500:100
x+50=25
x=25-50
x=-25
Vậy x=-25
\(\Rightarrow100\left(x+50\right)=2500\)
\(\Rightarrow x+50=250\)
\(\Rightarrow x=200\)
\(100x+50.100=2500\)
\(\Rightarrow100x+5000=2500\)
\(100x=2500-5000\)
\(100x=-2500\)
\(\Rightarrow x=-2500:100\)
Vậy x = -25
\(100\left(x+50\right)=2500\)
\(\Rightarrow x+50=25\)
\(\Rightarrow x=25-50\)
\(\Rightarrow x=-50\)
x = 2500 - 50.100
x = -2500
x = -2500 : 100
x = -25