16x+12-3x=7x(3x-4)

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Solution for 16x+12-3x=7x(3x-4) equation:


Simplifying
16x + 12 + -3x = 7x(3x + -4)

Reorder the terms:
12 + 16x + -3x = 7x(3x + -4)

Combine like terms: 16x + -3x = 13x
12 + 13x = 7x(3x + -4)

Reorder the terms:
12 + 13x = 7x(-4 + 3x)
12 + 13x = (-4 * 7x + 3x * 7x)
12 + 13x = (-28x + 21x2)

Solving
12 + 13x = -28x + 21x2

Solving for variable 'x'.

Combine like terms: 13x + 28x = 41x
12 + 41x + -21x2 = -28x + 21x2 + 28x + -21x2

Reorder the terms:
12 + 41x + -21x2 = -28x + 28x + 21x2 + -21x2

Combine like terms: -28x + 28x = 0
12 + 41x + -21x2 = 0 + 21x2 + -21x2
12 + 41x + -21x2 = 21x2 + -21x2

Combine like terms: 21x2 + -21x2 = 0
12 + 41x + -21x2 = 0

Begin completing the square.  Divide all terms by
-21 the coefficient of the squared term: 

Divide each side by '-21'.
-0.5714285714 + -1.952380952x + x2 = 0

Move the constant term to the right:

Add '0.5714285714' to each side of the equation.
-0.5714285714 + -1.952380952x + 0.5714285714 + x2 = 0 + 0.5714285714

Reorder the terms:
-0.5714285714 + 0.5714285714 + -1.952380952x + x2 = 0 + 0.5714285714

Combine like terms: -0.5714285714 + 0.5714285714 = 0.0000000000
0.0000000000 + -1.952380952x + x2 = 0 + 0.5714285714
-1.952380952x + x2 = 0 + 0.5714285714

Combine like terms: 0 + 0.5714285714 = 0.5714285714
-1.952380952x + x2 = 0.5714285714

The x term is -1.952380952x.  Take half its coefficient (-0.976190476).
Square it (0.9529478454) and add it to both sides.

Add '0.9529478454' to each side of the equation.
-1.952380952x + 0.9529478454 + x2 = 0.5714285714 + 0.9529478454

Reorder the terms:
0.9529478454 + -1.952380952x + x2 = 0.5714285714 + 0.9529478454

Combine like terms: 0.5714285714 + 0.9529478454 = 1.5243764168
0.9529478454 + -1.952380952x + x2 = 1.5243764168

Factor a perfect square on the left side:
(x + -0.976190476)(x + -0.976190476) = 1.5243764168

Calculate the square root of the right side: 1.234656396

Break this problem into two subproblems by setting 
(x + -0.976190476) equal to 1.234656396 and -1.234656396.

Subproblem 1

x + -0.976190476 = 1.234656396 Simplifying x + -0.976190476 = 1.234656396 Reorder the terms: -0.976190476 + x = 1.234656396 Solving -0.976190476 + x = 1.234656396 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.976190476' to each side of the equation. -0.976190476 + 0.976190476 + x = 1.234656396 + 0.976190476 Combine like terms: -0.976190476 + 0.976190476 = 0.000000000 0.000000000 + x = 1.234656396 + 0.976190476 x = 1.234656396 + 0.976190476 Combine like terms: 1.234656396 + 0.976190476 = 2.210846872 x = 2.210846872 Simplifying x = 2.210846872

Subproblem 2

x + -0.976190476 = -1.234656396 Simplifying x + -0.976190476 = -1.234656396 Reorder the terms: -0.976190476 + x = -1.234656396 Solving -0.976190476 + x = -1.234656396 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.976190476' to each side of the equation. -0.976190476 + 0.976190476 + x = -1.234656396 + 0.976190476 Combine like terms: -0.976190476 + 0.976190476 = 0.000000000 0.000000000 + x = -1.234656396 + 0.976190476 x = -1.234656396 + 0.976190476 Combine like terms: -1.234656396 + 0.976190476 = -0.25846592 x = -0.25846592 Simplifying x = -0.25846592

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.210846872, -0.25846592}

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