Question

1. -13 + 6.3x + 3.9x + 14.1 - 5.7y + 2y

Explanation:

Step1: Combine like terms for x

We have \(6.3x\) and \(3.9x\). To combine them, we add their coefficients: \(6.3 + 3.9 = 10.2\), so the \(x\) terms combine to \(10.2x\).

Step2: Combine like terms for y

We have \(-5.7y\) and \(2y\). Adding their coefficients: \(-5.7 + 2 = -3.7\), so the \(y\) terms combine to \(-3.7y\).

Step3: Combine constant terms

We have \(-13\) and \(14.1\). Adding them: \(-13 + 14.1 = 1.1\).

Step4: Combine all combined terms

Putting together the combined \(x\) terms, \(y\) terms, and constant term, we get \(10.2x - 3.7y + 1.1\).

Answer:

\(10.2x - 3.7y + 1.1\)