Question

solve for a.
7 + 3a = 12 + 2a
a = ?

Explanation:

Step1: Subtract \(2a\) from both sides

To isolate the variable \(a\), we first subtract \(2a\) from each side of the equation \(7 + 3a = 12 + 2a\). This gives us \(7 + 3a - 2a = 12 + 2a - 2a\), which simplifies to \(7 + a = 12\).

Step2: Subtract 7 from both sides

Next, we subtract 7 from both sides to solve for \(a\). So, \(7 + a - 7 = 12 - 7\), which simplifies to \(a = 5\).

Answer:

\(5\)