4/2 = 6/X

Solution

\frac{4}{2} = \frac{6}{X}

X = 3

Solution steps

\frac{4}{2} = \frac{6}{X}

Cross multiply

4 X = 12

Divide both sides by

4

X = 3

Verify Solutions

Find undefined (singularity) points:

X = 0

Combine undefined points with solutions:

X = 3

\frac{8}{x - 10} = \frac{4}{x + 9}

0.000000042 = \frac{( 2 x ) ^{2}}{0.6 - x}

x = \frac{3}{x - 4}

\frac{1}{R} = \frac{1}{R ^{1}} + \frac{1}{R ^{2}}

4 x - \frac{108}{x ^{2}} = 0