Hello, mojojojo!

If the length and the width of a rectangle are increased by two inches,

the area of the rectangle is 120 square inches.

If the length and the width of a rectangle are decreased by two inches,

the area of the rectangle is 48 square inches.

Find the length of the rectangle.

Let = length of the rectangle.

Let = width of the rectangle.

Then we have: .

. . Subtract: .

Substitute into [1]: .

. .

Assuming we have: .