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Anonymous
x + 3 = 2x
3 = x
x cannot be 2
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2x+2=x+5 x=3
2x = 4x + 3 -2x = 3 x = -3 / 2
2x-3=x+2 2x-x=2+3 x=5
2x+3 = 3x+5 2x-3x = 5-3 -x = 2 x = -2
2x+3 = 7 2x = 7-3 2x = 4 x = 2