2015*1999-1998*2004-2007*2002+2000*1997=

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Solution for 2015*1999-1998*2004-2007*2002+2000*1997= equation: 


Simplifying
2015 * 1999 + -1998 * 2004 + -2007 * 2002 + 2000 * 1997 = 0

Multiply 2015 * 1999
4027985 + -1998 * 2004 + -2007 * 2002 + 2000 * 1997 = 0

Multiply -1998 * 2004
4027985 + -4003992 + -2007 * 2002 + 2000 * 1997 = 0

Multiply -2007 * 2002
4027985 + -4003992 + -4018014 + 2000 * 1997 = 0

Multiply 2000 * 1997
4027985 + -4003992 + -4018014 + 3994000 = 0

Combine like terms: 4027985 + -4003992 = 23993
23993 + -4018014 + 3994000 = 0

Combine like terms: 23993 + -4018014 = -3994021
-3994021 + 3994000 = 0

Combine like terms: -3994021 + 3994000 = -21
-21 = 0

Solving
-21 = 0

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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