What is the answer to (42)/x+9=11 ?

The answer to (42)/x+9=11 is x=21

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(42)/x+9=11

\frac{42}{x} + 9 = 11

x = 21

Solution steps

\frac{42}{x} + 9 = 11

Move

9

to the right side

\frac{42}{x} = 2

Multiply both sides by

x

42 = 2 x

Switch sides

2 x = 42

Divide both sides by

2

x = 21

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = 21

\frac{6}{x + 4} = (x + 3)

x, \frac{x + 1}{x - 3} = y

6 = - \frac{4}{v - 3}

\frac{1}{3 x} = 1 - x

6 = - \frac{3}{v}