To find the value of \( x \) in the equation \( 7x - 5 + x + 3 = 90 \), we can first simplify the equation:
- Combine like terms:
\[ 7x + x - 5 + 3 = 90 \]
This becomes:
\[ 8x - 2 = 90 \]
- Next, add 2 to both sides:
\[ 8x - 2 + 2 = 90 + 2 \]
This simplifies to:
\[ 8x = 92 \]
- Now, divide both sides by 8:
\[ x = \frac{92}{8} \]
- Simplifying that fraction gives:
\[ x = 11.5 \]
Therefore, the value of \( x \) is \( 11.5 \).