3x=3[x+7]

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Solution for 3x=3[x+7] equation: 


Simplifying
3x = 3[x + 7]

Reorder the terms:
3x = 3[7 + x]
3x = [7 * 3 + x * 3]
3x = [21 + 3x]

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

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

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

Solving
0 = 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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