Question

What is 3-2y+(-8y)+8.4 as a simplified expression

Answer 1

-10y+11.4

Explanation:

you combine -2y with -8y to get negative -10y. Then you combine 3 and 8.4 to get 11. Variables usually come first in equations, I don't think it matters, but you might want to put them first anyway.

Answer 2

-10y + 11.4

I hope this helps you out