7(3x+3)+4=21x+25

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Solution for 7(3x+3)+4=21x+25 equation: 


Simplifying
7(3x + 3) + 4 = 21x + 25

Reorder the terms:
7(3 + 3x) + 4 = 21x + 25
(3 * 7 + 3x * 7) + 4 = 21x + 25
(21 + 21x) + 4 = 21x + 25

Reorder the terms:
21 + 4 + 21x = 21x + 25

Combine like terms: 21 + 4 = 25
25 + 21x = 21x + 25

Reorder the terms:
25 + 21x = 25 + 21x

Add '-25' to each side of the equation.
25 + -25 + 21x = 25 + -25 + 21x

Combine like terms: 25 + -25 = 0
0 + 21x = 25 + -25 + 21x
21x = 25 + -25 + 21x

Combine like terms: 25 + -25 = 0
21x = 0 + 21x
21x = 21x

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

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

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

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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