6(3x-7)=21x

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Solution for 6(3x-7)=21x equation:


Simplifying
6(3x + -7) = 21x

Reorder the terms:
6(-7 + 3x) = 21x
(-7 * 6 + 3x * 6) = 21x
(-42 + 18x) = 21x

Solving
-42 + 18x = 21x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-21x' to each side of the equation.
-42 + 18x + -21x = 21x + -21x

Combine like terms: 18x + -21x = -3x
-42 + -3x = 21x + -21x

Combine like terms: 21x + -21x = 0
-42 + -3x = 0

Add '42' to each side of the equation.
-42 + 42 + -3x = 0 + 42

Combine like terms: -42 + 42 = 0
0 + -3x = 0 + 42
-3x = 0 + 42

Combine like terms: 0 + 42 = 42
-3x = 42

Divide each side by '-3'.
x = -14

Simplifying
x = -14

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