x.0,25+x.8=9,9
x.(0,25.8)=9,9
x.2=9,9
x=9,9/2
x=4,95
\(x.0,25+x.8=9,9\)
\(x.4+x.8=9,9\)
\(x.\left(4+8\right)=9,9\)
\(x.12=9,9\)
\(x=9,9:12\)
\(x=0,825\)
x.0,25+x.8=9,9
x.(0,25+8)=9,9
x.8,25 =9,9
x = 9,9:8,25
=> x=1,2
Vậy x=1,2
\(x.0,25+x.8=9,9\)
\(x.\left(0,25+8\right)=9,9\)
\(x.8,25=9,9\)
\(x=9,9:8,25\)
\(x=1,2\)
X.0,25 + X.8 = 9,9
=> X (0,25+8) = 9,9
=> X.8,25 = 9,9
=> X = 9,9 : 8,25
=> X = 1.2