3(4x-1)=4x+21

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


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

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

Reorder the terms:
-3 + 12x = 21 + 4x

Solving
-3 + 12x = 21 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
-3 + 12x + -4x = 21 + 4x + -4x

Combine like terms: 12x + -4x = 8x
-3 + 8x = 21 + 4x + -4x

Combine like terms: 4x + -4x = 0
-3 + 8x = 21 + 0
-3 + 8x = 21

Add '3' to each side of the equation.
-3 + 3 + 8x = 21 + 3

Combine like terms: -3 + 3 = 0
0 + 8x = 21 + 3
8x = 21 + 3

Combine like terms: 21 + 3 = 24
8x = 24

Divide each side by '8'.
x = 3

Simplifying
x = 3

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