Saw this on another forum. Replace 2 with x:
48/x(9+3)=288
the x has to be distributed.
48/9x+3x=288
48/12x=288
x is not = to 2 here because that would make the equation read 2=288.
48/x(9+3)=2
48/9x+3x=2
48/12x=2
x=2
The first one is not true.
2(9+3) and 2x(9+3) are different.
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