What is the value of x in 3x + 4 = 10?

The value of x in the equation 3x + 4 = 10 is 2.

To find the value of x, we need to solve the equation step by step. The equation given is 3x + 4 = 10. Our goal is to isolate x on one side of the equation.

First, we need to get rid of the constant term on the left side of the equation. The constant term here is 4. To do this, we subtract 4 from both sides of the equation:
\[ 3x + 4 - 4 = 10 - 4 \]
This simplifies to:
\[ 3x = 6 \]

Next, we need to isolate x by getting rid of the coefficient of x, which is 3. We do this by dividing both sides of the equation by 3:
\[ \frac{3x}{3} = \frac{6}{3} \]
This simplifies to:
\[ x = 2 \]

So, the value of x is 2. This means that if you substitute x with 2 in the original equation, both sides of the equation will be equal. Let's check our solution to be sure:
\[ 3(2) + 4 = 10 \]
\[ 6 + 4 = 10 \]
\[ 10 = 10 \]

Since both sides of the equation are equal, our solution is correct. Therefore, x = 2 is indeed the value that satisfies the equation 3x + 4 = 10.