7-(2x/3)
-2x/3 <7
-2x<21
x€{.....1,0,-1,-2,-3,-4,-5,-6,-7,-8,-9,-10
x+(3/9)
x+3/9=9/9
x=6/9=2/3
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7-(2x/3)
-2x/3 <7
-2x<21
x€{.....1,0,-1,-2,-3,-4,-5,-6,-7,-8,-9,-10
x+(3/9)
x+3/9=9/9
x=6/9=2/3