28=-7(3x+4)+21x

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Solution for 28=-7(3x+4)+21x equation: 


Simplifying
28 = -7(3x + 4) + 21x

Reorder the terms:
28 = -7(4 + 3x) + 21x
28 = (4 * -7 + 3x * -7) + 21x
28 = (-28 + -21x) + 21x

Combine like terms: -21x + 21x = 0
28 = -28 + 0
28 = -28

Solving
28 = -28

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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