Question

\(70:\frac{4x+720}{x}=\frac{1}{2}\)

M.n giup em vs mai em nop r

Answer 1

\(70:\frac{4x+720}{x}=\frac{1}{2}\)

\(\frac{4x+720}{x}=70:\frac{1}{2}\)

\(\frac{4x+720}{x}=140\)

\(4x+720=140x\)

\(4x-140x=-720\)

\(-136x=-720\)

\(x=\frac{-720}{-136}\)

\(x=\frac{90}{17}\)

Answer 2

\(\frac{70x}{4x+720}=\frac{1}{2}\)

\(140x=4x+720\)

\(136x=720\)

        \(x=720:136\)

        \(x=\frac{90}{17}\)

Answer 3

\(70\div\frac{4x+720}{x}=\frac{1}{2}\)

=> \(70\cdot\frac{x}{4x+720}=\frac{1}{2}\)

=> \(\frac{70x}{4x+720}=\frac{1}{2}\)

=> \(70x\cdot2=4x+720\)

=> \(140x=4x+720\)

=> \(140x-4x=720\)

=> \(136x=720\)

=> \(x=\frac{720}{136}=\frac{90}{17}\)