It is 6x+1 simplified
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4x + 8 + 7x + 12 = 11x + 20
4x+8
4x+32=-4x+16x4x+32=12x-4x -4x32=8x/8 /84=x
5x + 3 - 4 + 4x = 9x -1
9x + 8 = 4x + 23Subtract 8 from both sides9x = 4x + 15Subtract 4x from both sides5x = 15Divide both sides by 5x = 3