6/x = 2/3

Solution

\frac{6}{x} = \frac{2}{3}

x = 9

Solution steps

\frac{6}{x} = \frac{2}{3}

Cross multiply

18 = x \cdot 2

Switch sides

x \cdot 2 = 18

Divide both sides by

2

x = 9

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = 9

\frac{8}{x + 3} + \frac{3}{x + 8} = 1

16 = \frac{1}{x ^{2}}

\frac{x ^{2}}{x + 120} = 60

\frac{3}{x} = 45

r, F = \frac{G mm}{r ^{2}}