Answer :

Ematio
The answer is B.
3m - 9 = 9 + 3m, Add the 9s,
3m = 18 + 3m, subtract the 3m's,
0 = 18, 0 does not equal 18, so there are no solutions.
iGreen
3m - 9 = 3m + 9

The two sides of the equal sign are not equal, therefore it has no solutions.

Other Questions