If two angles are complementary, their measures add up to 90 degrees.
Given:
- One angle = 40°
- The other angle = (8x + 2)°
We can set up the following equation:
\[ 40 + (8x + 2) = 90 \]
Now, simplify the equation:
\[ 40 + 8x + 2 = 90 \] \[ 8x + 42 = 90 \]
Next, subtract 42 from both sides:
\[ 8x = 90 - 42 \] \[ 8x = 48 \]
Now, divide by 8:
\[ x = \frac{48}{8} = 6 \]
So, the value of \( x \) is \( 6 \).