# 61 is the difference between Carlos's age and 23. How do you write this as an equation?

$a$ represents Carlos's age
$a - 23 = 61$
"61 is" signifies that one part of the equation must be $61 =$. The difference between two numbers is the first number (in this case, Carlos's age) subtracted by the second number (23). Thus, $61 = a - 23$.