Simplify the Expression: 5.6x + 7.9y + 53xy + 12.1x

To solve this problem, follow these steps:

• Step 1: Identify Like Terms

The expression is $5.6x + 7.9y + 53xy + 12.1x$. Here, $5.6x$ and $12.1x$ are like terms.

• Step 2: Combine Like Terms

Add the coefficients of $x$: $5.6x + 12.1x = (5.6 + 12.1)x = 17.7x$.

• Step 3: Write the Simplified Expression

After combining the like terms, we get:

$17.7x + 7.9y + 53xy$

This is the simplified form of the expression.

Therefore, the solution to the problem is $17.7x + 53xy + 7.9y$.