8x - 9 = 11x + 12 8x = 11x + 21 -3x = 21 x = -7
X = 81 sqrt(X) + 3 = 12 ( subtract 3 from each side ) sqrt(X) = 9 (square both sides ) X = 81 ( the square root of 81 is 9 )
5x = 4x + 9 x = 9
x=9 y=1
no
x=-24
3
-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