1. Solve each given linear system
Problem 1 has three parts, each with a different system of linear equations. Let's solve each system step by step.
For part (a):
[ \begin{align*} x + y &= 3 \quad \text{(i)} \ x - y &= -3 \quad \text{(ii)} \ \end{align*} ]
We can add equation (i) and (ii) to...