x:0,25-x=15,6
x.4-x=15,6
x.(4-1)=15,6
x.3=15,6
x=15,6:3
x=5,2
\(x:0,25-x=15,6\)
\(\Leftrightarrow4x-x=15,6\)
\(\Leftrightarrow x\left(4-1\right)=15,6\)
\(\Leftrightarrow3x=15,6\)
\(\Leftrightarrow x=5,2\)
Trả lời:
\(x:0,25-x=15,6\)
\(\Leftrightarrow4x-x=15,6\)
\(\Leftrightarrow3x=15,6\)
\(\Leftrightarrow x=5,2\)
Vậy\(x=5,2\)
Hok tốt!
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