Question

tìm x biết :7/5 * x + 13/2 +6/3 * x = 1/15 * x +17/2

Answer 1

\(\frac{7}{5}x+\frac{13}{2}+\frac{6}{3}x=\frac{1}{15}x+\frac{17}{2}\)

=\(\frac{7}{5}x+\frac{6}{3}x-\frac{1}{15}x=\frac{17}{2}-\frac{13}{2}\)

\(\frac{10}{3}x=2\)

x=\(\frac{3}{5}\)

Answer 2

\(\frac{7}{5}.x+\frac{13}{2}+\frac{6}{3}.x=\frac{1}{15}.x+\frac{17}{2}\)

\(\left(\frac{7}{5}+2\right).x+\frac{13}{2}=\frac{1}{15}.x+\frac{17}{2}\)

\(\frac{17}{5}.x+\frac{13}{2}=\frac{1}{15}.x+\frac{17}{2}\)

\(\frac{17}{5}.x-\frac{1}{15}.x=\frac{17}{2}-\frac{13}{2}\)

\(\left(\frac{17}{5}-\frac{1}{15}\right)x=2\)

\(\frac{10}{3}.x=2\)

\(x=2:\frac{10}{3}\)

\(x=\frac{3}{5}\)