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

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


Simplifying
3(1 + -3x) = 21 + -4x + 7
(1 * 3 + -3x * 3) = 21 + -4x + 7
(3 + -9x) = 21 + -4x + 7

Reorder the terms:
3 + -9x = 21 + 7 + -4x

Combine like terms: 21 + 7 = 28
3 + -9x = 28 + -4x

Solving
3 + -9x = 28 + -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 + -9x + 4x = 28 + -4x + 4x

Combine like terms: -9x + 4x = -5x
3 + -5x = 28 + -4x + 4x

Combine like terms: -4x + 4x = 0
3 + -5x = 28 + 0
3 + -5x = 28

Add '-3' to each side of the equation.
3 + -3 + -5x = 28 + -3

Combine like terms: 3 + -3 = 0
0 + -5x = 28 + -3
-5x = 28 + -3

Combine like terms: 28 + -3 = 25
-5x = 25

Divide each side by '-5'.
x = -5

Simplifying
x = -5

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