Adding 7
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subtracting six
6x-7 = 3x+5 6x = 3x+12 (subtracting -7) 3x=12 (subtracting 3x) x=4 (dividing by 3)
-7
Negative 9 plus 7 is the same as subtracting 9 from 7, which equals -2. When adding a negative number, it is essentially the same as subtracting the absolute value of that number. In this case, subtracting 9 from 7 gives us -2.
It is: (8-2)*(7-3) = 24