What is the answer to 3/9 = x/(12) ?

The answer to 3/9 = x/(12) is x=4

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3/9 = x/(12)

\frac{3}{9} = \frac{x}{12}

x = 4

Solution steps

\frac{3}{9} = \frac{x}{12}

Switch sides

\frac{x}{12} = \frac{3}{9}

Cancel the common factor:

3

\frac{x}{12} = \frac{1}{3}

Multiply both sides by

12

x = 4

3 x^{2} + 30 x + 72

x + 1 = 2

(\frac{9 x ^{2} y ^{2}}{4 x ^{6} y ^{4}})^{\frac{1}{2}}

x^{2} - 14 x + 42 = 0

15 z + (4 - z) = 9 - (z - 6)