The unknown number in Lilah's equation is the number of birds in the park. If she counted 6 in her yard and the total count is 54, the equation can be represented as:
6
+
unknown number
=
54
6+unknown number=54
To find the unknown number, Lilah can use the inverse operation of addition, which is subtraction. Therefore, the unknown number can be found by subtracting 6 from 54:
54
−
6
=
48
54−6=48
So, the unknown number in Lilah's equation is 48, which represents the number of birds in the