5m+4=7m(m+1)+2m

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Solution for 5m+4=7m(m+1)+2m equation:


Simplifying
5m + 4 = 7m(m + 1) + 2m

Reorder the terms:
4 + 5m = 7m(m + 1) + 2m

Reorder the terms:
4 + 5m = 7m(1 + m) + 2m
4 + 5m = (1 * 7m + m * 7m) + 2m
4 + 5m = (7m + 7m2) + 2m

Reorder the terms:
4 + 5m = 7m + 2m + 7m2

Combine like terms: 7m + 2m = 9m
4 + 5m = 9m + 7m2

Solving
4 + 5m = 9m + 7m2

Solving for variable 'm'.

Combine like terms: 5m + -9m = -4m
4 + -4m + -7m2 = 9m + 7m2 + -9m + -7m2

Reorder the terms:
4 + -4m + -7m2 = 9m + -9m + 7m2 + -7m2

Combine like terms: 9m + -9m = 0
4 + -4m + -7m2 = 0 + 7m2 + -7m2
4 + -4m + -7m2 = 7m2 + -7m2

Combine like terms: 7m2 + -7m2 = 0
4 + -4m + -7m2 = 0

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

Divide each side by '-7'.
-0.5714285714 + 0.5714285714m + m2 = 0

Move the constant term to the right:

Add '0.5714285714' to each side of the equation.
-0.5714285714 + 0.5714285714m + 0.5714285714 + m2 = 0 + 0.5714285714

Reorder the terms:
-0.5714285714 + 0.5714285714 + 0.5714285714m + m2 = 0 + 0.5714285714

Combine like terms: -0.5714285714 + 0.5714285714 = 0.0000000000
0.0000000000 + 0.5714285714m + m2 = 0 + 0.5714285714
0.5714285714m + m2 = 0 + 0.5714285714

Combine like terms: 0 + 0.5714285714 = 0.5714285714
0.5714285714m + m2 = 0.5714285714

The m term is 0.5714285714m.  Take half its coefficient (0.2857142857).
Square it (0.08163265305) and add it to both sides.

Add '0.08163265305' to each side of the equation.
0.5714285714m + 0.08163265305 + m2 = 0.5714285714 + 0.08163265305

Reorder the terms:
0.08163265305 + 0.5714285714m + m2 = 0.5714285714 + 0.08163265305

Combine like terms: 0.5714285714 + 0.08163265305 = 0.65306122445
0.08163265305 + 0.5714285714m + m2 = 0.65306122445

Factor a perfect square on the left side:
(m + 0.2857142857)(m + 0.2857142857) = 0.65306122445

Calculate the square root of the right side: 0.808122036

Break this problem into two subproblems by setting 
(m + 0.2857142857) equal to 0.808122036 and -0.808122036.

Subproblem 1

m + 0.2857142857 = 0.808122036 Simplifying m + 0.2857142857 = 0.808122036 Reorder the terms: 0.2857142857 + m = 0.808122036 Solving 0.2857142857 + m = 0.808122036 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-0.2857142857' to each side of the equation. 0.2857142857 + -0.2857142857 + m = 0.808122036 + -0.2857142857 Combine like terms: 0.2857142857 + -0.2857142857 = 0.0000000000 0.0000000000 + m = 0.808122036 + -0.2857142857 m = 0.808122036 + -0.2857142857 Combine like terms: 0.808122036 + -0.2857142857 = 0.5224077503 m = 0.5224077503 Simplifying m = 0.5224077503

Subproblem 2

m + 0.2857142857 = -0.808122036 Simplifying m + 0.2857142857 = -0.808122036 Reorder the terms: 0.2857142857 + m = -0.808122036 Solving 0.2857142857 + m = -0.808122036 Solving for variable 'm'. Move all terms containing m to the left, all other terms to the right. Add '-0.2857142857' to each side of the equation. 0.2857142857 + -0.2857142857 + m = -0.808122036 + -0.2857142857 Combine like terms: 0.2857142857 + -0.2857142857 = 0.0000000000 0.0000000000 + m = -0.808122036 + -0.2857142857 m = -0.808122036 + -0.2857142857 Combine like terms: -0.808122036 + -0.2857142857 = -1.0938363217 m = -1.0938363217 Simplifying m = -1.0938363217

Solution

The solution to the problem is based on the solutions from the subproblems. m = {0.5224077503, -1.0938363217}

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