The expression below represents the area, in square inches, of a rectangular picture mat.
20 (x - y) - 4 (x + y)
What is an equivalent expression for the area of the picture mat, in square inches?
PLEASE show how it is figured out and the answer please? 
+4473 You can find an equivalent expression by distributing the 20 and -4.
20x - 20y - 4x - 4y.
Collect like terms:
20x - 4x - 20y - 4y.
16x - 24y.
+4473 You can find an equivalent expression by distributing the 20 and -4.
20x - 20y - 4x - 4y.
Collect like terms:
20x - 4x - 20y - 4y.
16x - 24y.
