2x + 3 is an expression that is already in simplest form; you cannot "solve" it.
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2x+3 = 7 2x = 7-3 2x = 4 x = 2
3x+4 = 2x-3 3x-2x = -3-4 x = -7
2x + 3 = 9 To solve Subtract '3' from both sides 2x = 6 Divide both sides by '2' x = 3 The Answer!!!!!
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 + 2/3= 5/3 2x= 3/3 2x=1 x=1/2