12,3:6=0,8x:56

To solve the equation \( \frac{12.3}{6} = \frac{0.8x}{56} \), we can start by simplifying both sides.

1. Calculate \( \frac{12.3}{6} \): \[ \frac{12.3}{6} = 2.05 \]

So, we have: \[ 2.05 = \frac{0.8x}{56} \]

2. Next, we multiply both sides by 56 to eliminate the fraction: \[ 2.05 \times 56 = 0.8x \]

Calculating \( 2.05 \times 56 \): \[ 2.05 \times 56 = 114.8 \]

So the equation now looks like: \[ 114.8 = 0.8x \]

3. To isolate \( x \), divide both sides by 0.8: \[ x = \frac{114.8}{0.8} \]

Calculating \( \frac{114.8}{0.8} \): \[ x = 143.5 \]

Therefore, the solution is: \[ x = 143.5 \]