3(x-7)=21+3x

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


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

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

Add '-3x' to each side of the equation.
-21 + 3x + -3x = 21 + 3x + -3x

Combine like terms: 3x + -3x = 0
-21 + 0 = 21 + 3x + -3x
-21 = 21 + 3x + -3x

Combine like terms: 3x + -3x = 0
-21 = 21 + 0
-21 = 21

Solving
-21 = 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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