To solve the equation, we have to isolate y on one side. Here, we can start by adding 12 to both sides of the equation using the Addition Property of Equality. This means that we can fill the first box with 12.
y - 12 &= 89
y-12+12 &= 89+12
y &=
Now, let's perform the addition to find the value of y and complete the second box! The sum of 89 and 12 is 101.
y - 12 &= 89
y-12+12 &= 89+12
y &= 101
