Vậy kq đâu bạn ==
Đề thiếu ???
mình nhầm bằng 6 nhé
x:1+x:0.5+x:0.25+x:0.125 = ?????????????????????????????????
x : 1 + x : 0.5 + x : 0.25 + x : 0.125 = 6
x + x . 2 + x . 4 + x . 8 = 6
x . (1 + 2 + 4 + 8) = 6
x . 15 = 6
x = 6:15 = 6/15
Trả lời:
\(x\div1+x\div0,5+x\div0,25\div0,125=6\)
\(x+x\times2+x\times4+x\times8=6\)
\(x\times\left(1+2+4+8\right)=6\)
\(x\times15=6\)
\(x=\frac{2}{5}\)
Vậy \(x=\frac{2}{5}\)
\(x:1+x:0,5+x:0,25+x:0,125=6\)
\(\Leftrightarrow x+x.2+x.4+x.8=6\)
\(\Leftrightarrow x.\left(1+2+4+8\right)=6\)
\(\Leftrightarrow x.15=6\)
\(\Leftrightarrow x=\frac{6}{15}\)
Vậy :............