To solve the equation \( 5.6x + 4.3x + 21.6 = 46.7 \), you can follow these steps:
Combine like terms: Add \( 5.6x \) and \( 4.3x \) together.
\[ 5.6x + 4.3x = 9.9x \]
So the equation becomes:
\[ 9.9x + 21.6 = 46.7 \]
Subtract 21.6 from both sides:
\[ 9.9x = 46.7 - 21.6 \]
Calculate \( 46.7 - 21.6 \):
\[ 46.7 - 21.6 = 25.1 \]
Now the equation is:
\[ 9.9x = 25.1 \]
Divide both sides by 9.9 to isolate \( x \):
\[ x = \frac{25.1}{9.9} \]
Now calculate \( \frac{25.1}{9.9} \):
\[ x \approx 2.53535353535 \text{ (or approximately 2.54)} \]
Thus, the solution is:
\[ x \approx 2.54 \]