x=-24
-9
-5x + x + 9 = -4x + 12 -4x + 9 = -4x + 12 9 = 12 This equation has no solution.
x ≠11 9 + x = 21 9 + x - 9 = 21 - 9 x = 12
-6
no...why would it.... it equals 2x+9
If: x+3+6x+9 = 0 then 7x+12 = 0 So: 7x = -12 and x = -12/7
-10x+3 = -x+12 -10x+x = 12-3 -9x = 9 x = -1
76
X = √63
-3
x=6