To simplify the given expression, we can distribute the -3 to both terms inside the parentheses:
-3(0.2x + 0.4y) = -0.6x - 1.2y
Now, we can add this result to the terms outside the parentheses:
-0.6x - 1.2y + 1.6x + 2.8y
Combining like terms:
(-0.6x + 1.6x) + (-1.2y + 2.8y)= 1x + 1.6y= x + 1.6y
So, the simplified expression is x + 1.6y.
To simplify the given expression, we can distribute the -3 to both terms inside the parentheses:
-3(0.2x + 0.4y) = -0.6x - 1.2y
Now, we can add this result to the terms outside the parentheses:
-0.6x - 1.2y + 1.6x + 2.8y
Combining like terms:
(-0.6x + 1.6x) + (-1.2y + 2.8y)
= 1x + 1.6y
= x + 1.6y
So, the simplified expression is x + 1.6y.