-21=7-4-1

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Solution for -21=7-4-1 equation: 


Simplifying
-21 = 7 + -4 + -1

Combine like terms: 7 + -4 = 3
-21 = 3 + -1

Combine like terms: 3 + -1 = 2
-21 = 2

Solving
-21 = 2

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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