4х+20=50

To solve the equation \(4x + 20 = 50\), follow these steps:

1. Subtract 20 from both sides of the equation:

   \[ 4x + 20 - 20 = 50 - 20 \]

   This simplifies to:

   \[ 4x = 30 \]

2. Now, divide both sides by 4:

   \[ x = \frac{30}{4} \]

   Simplifying the fraction gives:

   \[ x = 7.5 \]

So, the solution is \(x = 7.5\).