(18)/d =3

Solution

\frac{18}{d} = 3

d = 6

Solution steps

\frac{18}{d} = 3

Multiply both sides by

d

18 = 3 d

Switch sides

3 d = 18

Divide both sides by

3

d = 6

Verify Solutions

Find undefined (singularity) points:

d = 0

Combine undefined points with solutions:

d = 6

\frac{4}{x} - 5 = \frac{6}{9}

a, \frac{5 + b}{1 - a} = 3 b

\frac{A}{x - 3} = 2 x + 1

\frac{9}{10 r} = \frac{7}{5}

\frac{1 - x ^{- 1}}{1 - x ^{- 8}} = 0