how about his one
posted by chrissy on .
-7+ 5x = 10x-2? im not sure I know its
-1, but im not sure how.
-7 + 5x = 10x - 2
Since we need to get the unknowns on one side and the knowns on the other side and change their signs:
5x - 10x = 7 - 2
-5x = 5
x = -1
wait how did you what number did you subtract or add from where? to get that? to get 5x-10x=7-2?
is this right??
Except for typing = instead of + after the -7 in the first line,
-7+-5=-2 instead of -7 -5x = -2 in the third line,
the rest is OK.
You got the right answer but the intermediate steps contain errors that may just be sloppy typing