3(4x-3)=21x

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


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

Reorder the terms:
3(-3 + 4x) = 21x
(-3 * 3 + 4x * 3) = 21x
(-9 + 12x) = 21x

Solving
-9 + 12x = 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.
-9 + 12x + -21x = 21x + -21x

Combine like terms: 12x + -21x = -9x
-9 + -9x = 21x + -21x

Combine like terms: 21x + -21x = 0
-9 + -9x = 0

Add '9' to each side of the equation.
-9 + 9 + -9x = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -9x = 0 + 9
-9x = 0 + 9

Combine like terms: 0 + 9 = 9
-9x = 9

Divide each side by '-9'.
x = -1

Simplifying
x = -1

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