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3(2x+3)=5(2x-x)-x
6x+9=10x-5x-x
6x-10x+5x+x=-9
2x- -9 |:2
x= -9/2
x= -2½
3(2x+3) = 5(2-x) - 15x
6x + 9 = 10 - 5x - 15x
6x + 9 = 10 - 20x /=6x
9 = 10 - 26x / - 10
-1 = 26 x
1/26 =x