7m(m-3)=3m-14

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Solution for 7m(m-3)=3m-14 equation:


Simplifying
7m(m + -3) = 3m + -14

Reorder the terms:
7m(-3 + m) = 3m + -14
(-3 * 7m + m * 7m) = 3m + -14
(-21m + 7m2) = 3m + -14

Reorder the terms:
-21m + 7m2 = -14 + 3m

Solving
-21m + 7m2 = -14 + 3m

Solving for variable 'm'.

Reorder the terms:
14 + -21m + -3m + 7m2 = -14 + 3m + 14 + -3m

Combine like terms: -21m + -3m = -24m
14 + -24m + 7m2 = -14 + 3m + 14 + -3m

Reorder the terms:
14 + -24m + 7m2 = -14 + 14 + 3m + -3m

Combine like terms: -14 + 14 = 0
14 + -24m + 7m2 = 0 + 3m + -3m
14 + -24m + 7m2 = 3m + -3m

Combine like terms: 3m + -3m = 0
14 + -24m + 7m2 = 0

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

Divide each side by '7'.
2 + -3.428571429m + m2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -3.428571429m + -2 + m2 = 0 + -2

Reorder the terms:
2 + -2 + -3.428571429m + m2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -3.428571429m + m2 = 0 + -2
-3.428571429m + m2 = 0 + -2

Combine like terms: 0 + -2 = -2
-3.428571429m + m2 = -2

The m term is -3.428571429m.  Take half its coefficient (-1.714285715).
Square it (2.938775513) and add it to both sides.

Add '2.938775513' to each side of the equation.
-3.428571429m + 2.938775513 + m2 = -2 + 2.938775513

Reorder the terms:
2.938775513 + -3.428571429m + m2 = -2 + 2.938775513

Combine like terms: -2 + 2.938775513 = 0.938775513
2.938775513 + -3.428571429m + m2 = 0.938775513

Factor a perfect square on the left side:
(m + -1.714285715)(m + -1.714285715) = 0.938775513

Calculate the square root of the right side: 0.968904285

Break this problem into two subproblems by setting 
(m + -1.714285715) equal to 0.968904285 and -0.968904285.

Subproblem 1

m + -1.714285715 = 0.968904285 Simplifying m + -1.714285715 = 0.968904285 Reorder the terms: -1.714285715 + m = 0.968904285 Solving -1.714285715 + m = 0.968904285 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '1.714285715' to each side of the equation. -1.714285715 + 1.714285715 + m = 0.968904285 + 1.714285715 Combine like terms: -1.714285715 + 1.714285715 = 0.000000000 0.000000000 + m = 0.968904285 + 1.714285715 m = 0.968904285 + 1.714285715 Combine like terms: 0.968904285 + 1.714285715 = 2.68319 m = 2.68319 Simplifying m = 2.68319

Subproblem 2

m + -1.714285715 = -0.968904285 Simplifying m + -1.714285715 = -0.968904285 Reorder the terms: -1.714285715 + m = -0.968904285 Solving -1.714285715 + m = -0.968904285 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '1.714285715' to each side of the equation. -1.714285715 + 1.714285715 + m = -0.968904285 + 1.714285715 Combine like terms: -1.714285715 + 1.714285715 = 0.000000000 0.000000000 + m = -0.968904285 + 1.714285715 m = -0.968904285 + 1.714285715 Combine like terms: -0.968904285 + 1.714285715 = 0.74538143 m = 0.74538143 Simplifying m = 0.74538143

Solution

The solution to the problem is based on the solutions from the subproblems. m = {2.68319, 0.74538143}

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