If you mean 6x+3-27+15 then it is an expression that can be simplified to: 6x-9
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9x+6 = 6x+15 9x-6x = 15-6 3x = 9 x = 3
6x-x+15-9= 6x-x=5x 15-9=6 5x+6=0 5x=-6 x=-1.2
If you mean: 100-6x = 160-10x then the value of x works out as 15
6x + 15
3x = 6x - 15Add 15 to each side:3x + 15 = 6xSubtract 3x from each side:15 = 3xDivide each side by 3:5 = xAdd 8 to each side:13 = x + 8