(x+3)(3x+5)=7

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Solution for (x+3)(3x+5)=7 equation:


Simplifying
(x + 3)(3x + 5) = 7

Reorder the terms:
(3 + x)(3x + 5) = 7

Reorder the terms:
(3 + x)(5 + 3x) = 7

Multiply (3 + x) * (5 + 3x)
(3(5 + 3x) + x(5 + 3x)) = 7
((5 * 3 + 3x * 3) + x(5 + 3x)) = 7
((15 + 9x) + x(5 + 3x)) = 7
(15 + 9x + (5 * x + 3x * x)) = 7
(15 + 9x + (5x + 3x2)) = 7

Combine like terms: 9x + 5x = 14x
(15 + 14x + 3x2) = 7

Solving
15 + 14x + 3x2 = 7

Solving for variable 'x'.

Reorder the terms:
15 + -7 + 14x + 3x2 = 7 + -7

Combine like terms: 15 + -7 = 8
8 + 14x + 3x2 = 7 + -7

Combine like terms: 7 + -7 = 0
8 + 14x + 3x2 = 0

Factor a trinomial.
(4 + x)(2 + 3x) = 0

Subproblem 1

Set the factor '(4 + x)' equal to zero and attempt to solve: Simplifying 4 + x = 0 Solving 4 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + x = 0 + -4 x = 0 + -4 Combine like terms: 0 + -4 = -4 x = -4 Simplifying x = -4

Subproblem 2

Set the factor '(2 + 3x)' equal to zero and attempt to solve: Simplifying 2 + 3x = 0 Solving 2 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 3x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 3x = 0 + -2 3x = 0 + -2 Combine like terms: 0 + -2 = -2 3x = -2 Divide each side by '3'. x = -0.6666666667 Simplifying x = -0.6666666667

Solution

x = {-4, -0.6666666667}

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