[21+(-21)]+[21+(-25)]=

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Solution for [21+(-21)]+[21+(-25)]= equation: 


Simplifying
[21 + (-21)] + [21 + (-25)] = 0
[21 + -21] + [21 + (-25)] = 0

Combine like terms: 21 + -21 = 0
[0] + [21 + (-25)] = 0
0 + [21 + (-25)] = 0
0 + [21 + -25] = 0

Combine like terms: 21 + -25 = -4
0 + [-4] = 0
0 + -4 = 0

Combine like terms: 0 + -4 = -4
-4 = 0

Solving
-4 = 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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