Write an expression that is equivalent to 2.5x + (5y) - 2.5

2.5 (x + 2y - 1).

Step-by-step explanation:

2.5x + (5y) - 2.5

2.5x + 5y - 2.5 (we can just remove the parentheses without changing the value of the expression)

Each coefficient is divisible by 2.5 so by the distributive law:

2.5x + 5y - 2.5

= 2.5 (x + 2y - 1).