2x + 1 = 9
2x = 9 - 1
2x = 8
2x/2 = 8/2
x=4
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X = 0 (zero) Y = -1 (neg 1)
2x + 3y = 9x = 3, y = 1 therefore 6 + 3 = 9
It can be anything. Example: x=1
If we assume that it equals zero and you wish to solve for x, then the answer is:-x2 + 2x - 3 = 0x2 - 2x + 3 = 0x2 -2x + 1 = -2(x - 1)2 = -2x - 1 = ± √(-2)x = 1 ± i√2
2x + 5x - 1 = 9x 7x - 1 = 9x -1 = 9x - 7x -1 = 2x -1/2=x