You can subtract 78.2 from 287 to get the x value alone. Your new expression will look like this: .5x=208.8 Next you divide by .5 (or multiply the reciprocal 1/.5 depending on how you were taught) x=417.6
Step-by-step explanation: A number cube has 6 numbers on it. Only one of them is a two. If she were using two number cubes then she would have 2 out of 12 chances of landing on a number 2.