3x(2x+1)-5(2x+1)=

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Solution for 3x(2x+1)-5(2x+1)= equation: 


Simplifying
3x(2x + 1) + -5(2x + 1) = 0

Reorder the terms:
3x(1 + 2x) + -5(2x + 1) = 0
(1 * 3x + 2x * 3x) + -5(2x + 1) = 0
(3x + 6x2) + -5(2x + 1) = 0

Reorder the terms:
3x + 6x2 + -5(1 + 2x) = 0
3x + 6x2 + (1 * -5 + 2x * -5) = 0
3x + 6x2 + (-5 + -10x) = 0

Reorder the terms:
-5 + 3x + -10x + 6x2 = 0

Combine like terms: 3x + -10x = -7x
-5 + -7x + 6x2 = 0

Solving
-5 + -7x + 6x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-1 + -2x)(5 + -3x) = 0


Subproblem 1
Set the factor '(-1 + -2x)' equal to zero and attempt to solve:

Simplifying
-1 + -2x = 0

Solving
-1 + -2x = 0

Move all terms containing x to the left, all other terms to the right.

Add '1' to each side of the equation.
-1 + 1 + -2x = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -2x = 0 + 1
-2x = 0 + 1

Combine like terms: 0 + 1 = 1
-2x = 1

Divide each side by '-2'.
x = -0.5

Simplifying
x = -0.5

Subproblem 2
Set the factor '(5 + -3x)' equal to zero and attempt to solve:

Simplifying
5 + -3x = 0

Solving
5 + -3x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-5' to each side of the equation.
5 + -5 + -3x = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -3x = 0 + -5
-3x = 0 + -5

Combine like terms: 0 + -5 = -5
-3x = -5

Divide each side by '-3'.
x = 1.666666667

Simplifying
x = 1.666666667
Solution
x = {-0.5, 1.666666667}

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