[1-4]=7

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Solution for [1-4]=7 equation: 


Simplifying
[1 + -4] = 7

Combine like terms: 1 + -4 = -3
[-3] = 7
-3 = 7

Solving
-3 = 7

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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