Step 1 :1. \(2a + 4y = 33\)
Step 2 :2. \(4a + 5y = 51.75\)
Step 3 :3. \(a = \frac{51.75 - 5y}{4}\)
Step 4 :4. Substitute \(a\) from step 3 into step 1: \(2\left(\frac{51.75 - 5y}{4}\right) + 4y = 33\)
Step 5 :5. Solve for \(y\): \(y = 6.25\)
Step 6 :6. Substitute \(y\) back into step 3 to find \(a\): \(a = \frac{51.75 - 5(6.25)}{4}\)
Step 7 :7. Solve for \(a\): \(a = 3.5\)