Question

X x 5,25 + X x 3,75 + X = 396,8

Answer 1

\(x\cdot5,25+x\cdot3,75+x=396,8\)

\(x\cdot\left(5,25+3,75+1\right)=396,8\)

\(x\cdot10=396,8\)

\(x=396,8:10\)

\(x=39,68\)

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Answer 2

\(x\times5,25+x\times3,75+x=396,8\)

\(\Rightarrow x\times\left(5,25+3,75+1\right)=396,8\)

\(\Rightarrow x\times10=396,8\)

\(x=396,8\div10\)

\(x=39,68\)

Answer 3

\(x\cdot5,25+x\cdot3,75+x=396,8\)

\(x\cdot\left(5,25+3,75+1\right)=396,8\)

\(x\cdot10=396,8\)

\(x=396,8:10\)

\(x=39,68\)