7x(-3x)-5-8=4+10-7x+5

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Solution for 7x(-3x)-5-8=4+10-7x+5 equation:


Simplifying
7x(-3x) + -5 + -8 = 4 + 10 + -7x + 5

Remove parenthesis around (-3x)
7x * -3x + -5 + -8 = 4 + 10 + -7x + 5

Reorder the terms for easier multiplication:
7 * -3x * x + -5 + -8 = 4 + 10 + -7x + 5

Multiply 7 * -3
-21x * x + -5 + -8 = 4 + 10 + -7x + 5

Multiply x * x
-21x2 + -5 + -8 = 4 + 10 + -7x + 5

Reorder the terms:
-5 + -8 + -21x2 = 4 + 10 + -7x + 5

Combine like terms: -5 + -8 = -13
-13 + -21x2 = 4 + 10 + -7x + 5

Reorder the terms:
-13 + -21x2 = 4 + 10 + 5 + -7x

Combine like terms: 4 + 10 = 14
-13 + -21x2 = 14 + 5 + -7x

Combine like terms: 14 + 5 = 19
-13 + -21x2 = 19 + -7x

Solving
-13 + -21x2 = 19 + -7x

Solving for variable 'x'.

Reorder the terms:
-13 + -19 + 7x + -21x2 = 19 + -7x + -19 + 7x

Combine like terms: -13 + -19 = -32
-32 + 7x + -21x2 = 19 + -7x + -19 + 7x

Reorder the terms:
-32 + 7x + -21x2 = 19 + -19 + -7x + 7x

Combine like terms: 19 + -19 = 0
-32 + 7x + -21x2 = 0 + -7x + 7x
-32 + 7x + -21x2 = -7x + 7x

Combine like terms: -7x + 7x = 0
-32 + 7x + -21x2 = 0

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

Divide each side by '-21'.
1.523809524 + -0.3333333333x + x2 = 0

Move the constant term to the right:

Add '-1.523809524' to each side of the equation.
1.523809524 + -0.3333333333x + -1.523809524 + x2 = 0 + -1.523809524

Reorder the terms:
1.523809524 + -1.523809524 + -0.3333333333x + x2 = 0 + -1.523809524

Combine like terms: 1.523809524 + -1.523809524 = 0.000000000
0.000000000 + -0.3333333333x + x2 = 0 + -1.523809524
-0.3333333333x + x2 = 0 + -1.523809524

Combine like terms: 0 + -1.523809524 = -1.523809524
-0.3333333333x + x2 = -1.523809524

The x term is -0.3333333333x.  Take half its coefficient (-0.1666666667).
Square it (0.02777777779) and add it to both sides.

Add '0.02777777779' to each side of the equation.
-0.3333333333x + 0.02777777779 + x2 = -1.523809524 + 0.02777777779

Reorder the terms:
0.02777777779 + -0.3333333333x + x2 = -1.523809524 + 0.02777777779

Combine like terms: -1.523809524 + 0.02777777779 = -1.49603174621
0.02777777779 + -0.3333333333x + x2 = -1.49603174621

Factor a perfect square on the left side:
(x + -0.1666666667)(x + -0.1666666667) = -1.49603174621

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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