\(15,3-x\times4,5=0,9\)
\(x\times4,5=15,3-0,9\)
\(x\times4,5=14,4\)
\(x=14,4:4,5\)
\(x=3,2\)
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\(15,3-x\times4,5=0,9\)
\(x\times4,5=15,3-0,9\)
\(x\times4,5=14,4\)
\(x=14,4:4,5\)
\(x=3,2\)