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

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


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

Reorder the terms:
3(4 + 7x) = 21x + 4
(4 * 3 + 7x * 3) = 21x + 4
(12 + 21x) = 21x + 4

Reorder the terms:
12 + 21x = 4 + 21x

Add '-21x' to each side of the equation.
12 + 21x + -21x = 4 + 21x + -21x

Combine like terms: 21x + -21x = 0
12 + 0 = 4 + 21x + -21x
12 = 4 + 21x + -21x

Combine like terms: 21x + -21x = 0
12 = 4 + 0
12 = 4

Solving
12 = 4

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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