What is the answer to 80=(90)/x ?

The answer to 80=(90)/x is x= 9/8

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80=(90)/x

80 = \frac{90}{x}

x = \frac{9}{8}

Decimal Notation

x = 1.125

Solution steps

80 = \frac{90}{x}

Multiply both sides by

x

80 x = 90

Divide both sides by

80

x = \frac{9}{8}

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = \frac{9}{8}

y, x = \frac{y - 5}{2 y + 3}

\frac{2 x ( 4 - x ) - 1}{2 - 54 - x} = 0

\frac{6 x - 3}{x ^{2} - 9 x + 2} = 0

- \frac{1}{p} - 1 = - p

0.999 = \frac{R}{R + 1.6}