7(p+3)+9=5(p-2)3p

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Solution for 7(p+3)+9=5(p-2)3p equation:


Simplifying
7(p + 3) + 9 = 5(p + -2) * 3p

Reorder the terms:
7(3 + p) + 9 = 5(p + -2) * 3p
(3 * 7 + p * 7) + 9 = 5(p + -2) * 3p
(21 + 7p) + 9 = 5(p + -2) * 3p

Reorder the terms:
21 + 9 + 7p = 5(p + -2) * 3p

Combine like terms: 21 + 9 = 30
30 + 7p = 5(p + -2) * 3p

Reorder the terms:
30 + 7p = 5(-2 + p) * 3p

Reorder the terms for easier multiplication:
30 + 7p = 5 * 3p(-2 + p)

Multiply 5 * 3
30 + 7p = 15p(-2 + p)
30 + 7p = (-2 * 15p + p * 15p)
30 + 7p = (-30p + 15p2)

Solving
30 + 7p = -30p + 15p2

Solving for variable 'p'.

Combine like terms: 7p + 30p = 37p
30 + 37p + -15p2 = -30p + 15p2 + 30p + -15p2

Reorder the terms:
30 + 37p + -15p2 = -30p + 30p + 15p2 + -15p2

Combine like terms: -30p + 30p = 0
30 + 37p + -15p2 = 0 + 15p2 + -15p2
30 + 37p + -15p2 = 15p2 + -15p2

Combine like terms: 15p2 + -15p2 = 0
30 + 37p + -15p2 = 0

Begin completing the square.  Divide all terms by
-15 the coefficient of the squared term: 

Divide each side by '-15'.
-2 + -2.466666667p + p2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -2.466666667p + 2 + p2 = 0 + 2

Reorder the terms:
-2 + 2 + -2.466666667p + p2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -2.466666667p + p2 = 0 + 2
-2.466666667p + p2 = 0 + 2

Combine like terms: 0 + 2 = 2
-2.466666667p + p2 = 2

The p term is -2.466666667p.  Take half its coefficient (-1.233333334).
Square it (1.521111113) and add it to both sides.

Add '1.521111113' to each side of the equation.
-2.466666667p + 1.521111113 + p2 = 2 + 1.521111113

Reorder the terms:
1.521111113 + -2.466666667p + p2 = 2 + 1.521111113

Combine like terms: 2 + 1.521111113 = 3.521111113
1.521111113 + -2.466666667p + p2 = 3.521111113

Factor a perfect square on the left side:
(p + -1.233333334)(p + -1.233333334) = 3.521111113

Calculate the square root of the right side: 1.876462393

Break this problem into two subproblems by setting 
(p + -1.233333334) equal to 1.876462393 and -1.876462393.

Subproblem 1

p + -1.233333334 = 1.876462393 Simplifying p + -1.233333334 = 1.876462393 Reorder the terms: -1.233333334 + p = 1.876462393 Solving -1.233333334 + p = 1.876462393 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '1.233333334' to each side of the equation. -1.233333334 + 1.233333334 + p = 1.876462393 + 1.233333334 Combine like terms: -1.233333334 + 1.233333334 = 0.000000000 0.000000000 + p = 1.876462393 + 1.233333334 p = 1.876462393 + 1.233333334 Combine like terms: 1.876462393 + 1.233333334 = 3.109795727 p = 3.109795727 Simplifying p = 3.109795727

Subproblem 2

p + -1.233333334 = -1.876462393 Simplifying p + -1.233333334 = -1.876462393 Reorder the terms: -1.233333334 + p = -1.876462393 Solving -1.233333334 + p = -1.876462393 Solving for variable 'p'. Move all terms containing p to the left, all other terms to the right. Add '1.233333334' to each side of the equation. -1.233333334 + 1.233333334 + p = -1.876462393 + 1.233333334 Combine like terms: -1.233333334 + 1.233333334 = 0.000000000 0.000000000 + p = -1.876462393 + 1.233333334 p = -1.876462393 + 1.233333334 Combine like terms: -1.876462393 + 1.233333334 = -0.643129059 p = -0.643129059 Simplifying p = -0.643129059

Solution

The solution to the problem is based on the solutions from the subproblems. p = {3.109795727, -0.643129059}

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