-11x=220
11x=-220
x=-220/11=-20
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11x = 8x-6.............. 11x-8x = -6................... 3x= -6 x = -2
11x(2x - 1) = 0 so either 11x = 0 or x = ½
-7+11x = 9-5x 11x+5x = 9+7 16x = 16 x = 1
11x - 21 = 7x + 3 4x = 24x = 6
180=11x+9x. 180 = 20x. 18=2x. 9=x.