Could you please explain how i would answer a question such as this one?
0.8 (2x + x) + 3(7 - 4.1x) =
i went over the lesson provided by my teacher, and still don't understand it..
0.8 (2x + x) + 3(7 - 4.1x) =
0.8 (3x) + 21 - 12.3x
2.4x + 21 - 12.3x
-9.9x + 21