NM equals 2x + 1, as stated in the question!
x equals 4
2x + 1 = 6 2x = 5 x = 5/2 or 2.5
2x+5=3x+1 -x=-4 x=4
If: x+1+2x = 1x+5 Then: x = 2
5 - 2x = 8 x = -1 and 1/2 4x = 6 x = 6/4 or 3/2
Because all the terms have been divided by -1
That's not real clear. It could be 2 times positive 1 (which is 2) plus 5, which equals 7. It could be 2x + 1 + 5 which equals 2x + 6 It could be 2x + 1 = 5, in which case x = 2
2x+y=1
(5, 1)
(-1, 5)
(-1, 5)