3(7x-4)-1=21x-13

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Solution for 3(7x-4)-1=21x-13 equation:


Simplifying
3(7x + -4) + -1 = 21x + -13

Reorder the terms:
3(-4 + 7x) + -1 = 21x + -13
(-4 * 3 + 7x * 3) + -1 = 21x + -13
(-12 + 21x) + -1 = 21x + -13

Reorder the terms:
-12 + -1 + 21x = 21x + -13

Combine like terms: -12 + -1 = -13
-13 + 21x = 21x + -13

Reorder the terms:
-13 + 21x = -13 + 21x

Add '13' to each side of the equation.
-13 + 13 + 21x = -13 + 13 + 21x

Combine like terms: -13 + 13 = 0
0 + 21x = -13 + 13 + 21x
21x = -13 + 13 + 21x

Combine like terms: -13 + 13 = 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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