To simplify the expression 6 - 3.4y + (-7.5y) + 4.6, we can combine like terms.
First, let's combine the y terms:
-3.4y + (-7.5y) = -10.9y
Now, let's put it all together:
6 - 10.9y + 4.6
Finally, we can simplify further:
10.6 - 10.9y
So, the simplified expression is 10.6 - 10.9y.
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