7(3x-2)-4=21x-18

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Solution for 7(3x-2)-4=21x-18 equation:


Simplifying
7(3x + -2) + -4 = 21x + -18

Reorder the terms:
7(-2 + 3x) + -4 = 21x + -18
(-2 * 7 + 3x * 7) + -4 = 21x + -18
(-14 + 21x) + -4 = 21x + -18

Reorder the terms:
-14 + -4 + 21x = 21x + -18

Combine like terms: -14 + -4 = -18
-18 + 21x = 21x + -18

Reorder the terms:
-18 + 21x = -18 + 21x

Add '18' to each side of the equation.
-18 + 18 + 21x = -18 + 18 + 21x

Combine like terms: -18 + 18 = 0
0 + 21x = -18 + 18 + 21x
21x = -18 + 18 + 21x

Combine like terms: -18 + 18 = 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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