#### Explanation:

We can express discount amount as $x$ and the original price of the camera as $x + 632$. The equation to determine the price will be:

$\left(x + 632\right) \times \frac{20}{100} = x$

Simplify.

$\left(x + 632\right) \times \frac{1 \cancel{20}}{5 \cancel{100}} = x$

Multiply both sides by $5$.

$x + 632 = 5 x$

Subtract $x$ from both sides.

$632 = 4 x$

Divide both sides by $4$.

$158 = x$

Since the discount amount $\left(x\right)$ is $158$, the original price $\left(x + 632\right)$ will be $\left(158 + 632\right) = 790$.