What is the answer to 3/a =42 ?

The answer to 3/a =42 is a= 1/14

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3/a =42

\frac{3}{a} = 42

a = \frac{1}{14}

Decimal Notation

a = 0.07142 \dots

Solution steps

\frac{3}{a} = 42

Multiply both sides by

a

3 = 42 a

Switch sides

42 a = 3

Divide both sides by

42

a = \frac{1}{14}

Verify Solutions

Find undefined (singularity) points:

a = 0

Combine undefined points with solutions:

a = \frac{1}{14}

\frac{x - 2}{x} = \frac{1}{2}

\frac{60}{r} = - 10

0 = 20 - 7260 x^{- 2}

1200 = \frac{3350}{( 1 + x ) ^{8}}

\frac{5}{4 x ^{2}} = 25