2x + 3 = x + 1
Subtract x from both sides: x + 3 = 1
Subtract 3 from both sides: x = -2
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2x + 2 = 4x -1 2x = 3 x = 1.5
6x + 3 = 2x + 5 4x = 2 x=1/2
2x+8 = 6 2x = 6-8 2x = -2 x = -1
This equals 3x+3 also written as 3(x+1). If you mean a linear equation like 3x + 3 = 0, then the solution is x = -1
2x - 4x + 3 = 0 -2x + 3 = 0 2x = 3 x = 3/2 = 1.5