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12*11*10*9*8*7*6*5*4*3*2*1=0
We simplify the equation to the form, which is simple to understand
12*11*10*9*8*7*6*5*4*3*2*1=0
Simplifying:
+132*10*9*8*7*6*5*4*3*2*1=0
Simplifying:
+1320*9*8*7*6*5*4*3*2*1=0
Simplifying:
+11880*8*7*6*5*4*3*2*1=0
Simplifying:
+95040*7*6*5*4*3*2*1=0
Simplifying:
+665280*6*5*4*3*2*1=0
Simplifying:
+3991680*5*4*3*2*1=0
Simplifying:
+19958400*4*3*2*1=0
Simplifying:
+79833600*3*2*1=0
Simplifying:
+239500800*2*1=0
Simplifying:
+479001600*1=0
Simplifying:
+479001600=0
We move all terms containing to the left and all other terms to the right.
0=0-479001600
We simplify left and right side of the equation.
0=-479001600
0=-479001600
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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