2+3[7-3(-21)]=

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Solution for 2+3[7-3(-21)]= equation: 


Simplifying
2 + 3[7 + -3(-21)] = 0

Multiply -3 * -21
2 + 3[7 + 63] = 0

Combine like terms: 7 + 63 = 70
2 + 3[70] = 0

Multiply 3 * 70
2 + 210 = 0

Combine like terms: 2 + 210 = 212
212 = 0

Solving
212 = 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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