11 + 6x = 2x - 13
Subtract 2x from both sides: 11 + 4x = -13
Subtract 11 from both sides: 4x = -24
Divide both sides by 4: x = -6
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8x + 11 = 33 + 6x 8x - 6x = 33 - 11 2x = 22 x = 11
6x + 47 = 9x + 11 6x + 36 = 9x 36 = 3x 12 = x
8x-11+6x = -151 8x+6x = -151+11 14x = -140 x = -10
It is: 3x2+6x-11 = 0
x=4