Show that the following systems of linear equations has infinite number of solutions and solve `x+2y=5,\ \ 3x+6y=15`

Explanation

To show that the system of linear equations has infinitely many solutions and to solve it, we will analyze the given equations step by step.

### Given Equations:
1. \( x + 2y = 5 \) (Equation 1)
2. \( 3x + 6y = 15 \) (Equation 2)

### Step 1: Check for Consistency
We will first check if the two equations are consistent. To do this, we can manipulate Equation 2.
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