Solve for x:
9x-4=5x+28
x = 8
2(12x-9)=3(6x-16)
x=-5
-4(3x+7)=-2(8x+6)
x=4
21-2x-10=5-2x+6
x=infinite solutions
7-(6x+5)+6x=5x-(x+3)+5
x=0
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