9x is the lowest common multiple.
(9x * 1 = 9x)
(x * 9 = 9x)
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9x+18 = 180 9x = 180-18 9x = 162 x = 18
If: x+16 = 9x then x = 2
If you mean 9x+x then it is 10x when simplified
The expression (9x 7)-(x 3) can be simplified as follows: (9x - 7) - (x - 3) = 9x - 7 - x + 3 = 8x - 4
Since 9x^6 is a multiple of 3x^5, it is automatically the LCM.