And so this is going to give us, on the left-hand side But if we do that we have to subtract eightįrom the right, as well. Well we can subtract eight from the left. Rid of this positive eight on the left-hand side. Negative 21 X plus eight is equal to, these cancel out, and then equal to negative seven. And so this is going to get us to our left-hand side, negativeġ4 X plus negative seven X. We have to do to the left and vice versa. ![]() Subtract seven X from the right we have to it from the left, as well, if we want to keep this being an equation. So what we can do is we can subtract seven X from the right but of course if we want to This negative 14 X here but we wanna get rid of this seven X. Things so our X terms, let's try to get them Negative two times seven X is negative 14 X, and then negative two times negative four, make sure to pay attention to those signs, negative two times negativeįour is positive eight and that's going to be equal too. To do that is to distribute the negative two onto this expression. These expressions on the left and the right and the most obvious way But to even start to do that, we first have to simplify Terms, or non X terms, are on the right-hand side. Now we wanna get to a situation where all of our X termsĪre on the left-hand side, or on one side, usually the left, and all of our constant ![]() So I'm just going to rewrite the equation. Values actually gets quite hairy, and you would have to do it five times so let's just try to solve for X. Now, I definitely suggest the former, because substituting these Substitute these values and see which of these Solve this equation for X, or you could try to All right, we will now do it together and there's two ways to approach it. The expression X minus one, what is the value of X? So pause this video and try to Told, if negative two times the expression seven X minus four is equal to seven times
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |