80:x=46-30

To solve the equation \( 80:x = 46 - 30 \), first simplify the right side:

\[ 46 - 30 = 16 \]

Now the equation becomes:

\[ 80:x = 16 \]

This can be rewritten as:

\[ 80 = 16x \]

To solve for \( x \), divide both sides by 16:

\[ x = \frac{80}{16} = 5 \]

So, the value of \( x \) is 5.