A + 31a + 17 = 145

To solve the equation \(a + 31a + 17 = 145\), we can first combine like terms.

1. Combine \(a\) and \(31a\): \[ 32a + 17 = 145 \]

2. Next, subtract 17 from both sides: \[ 32a = 145 - 17 \] \[ 32a = 128 \]

3. Now, divide both sides by 32 to solve for \(a\): \[ a = \frac{128}{32} \] \[ a = 4 \]

The solution is \(a = 4\).