-2(-3.5)+8=21

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Solution for -2(-3.5)+8=21 equation: 


Simplifying
-2(-3.5) + 8 = 21

Multiply -2 * -3.5
7 + 8 = 21

Combine like terms: 7 + 8 = 15
15 = 21

Solving
15 = 21

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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