The expression 2.4x−3.9y−1.2x+ay is equivalent to 1.2x+1.2y.
What is the value of a?

The value of a from the given mathematical expression is 5.1.

Given the following data:

To determine the value of a:

In this exercise, you're required to solve for the value of a from the given mathematical expression. Since the two (2) mathematical expressions are equivalent (equal), we would go ahead to equate them as follows:

Simplifying the equation, we have:

a = 5.1

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