(7x+1)(x-3)=0

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Solution for (7x+1)(x-3)=0 equation:


Simplifying
(7x + 1)(x + -3) = 0

Reorder the terms:
(1 + 7x)(x + -3) = 0

Reorder the terms:
(1 + 7x)(-3 + x) = 0

Multiply (1 + 7x) * (-3 + x)
(1(-3 + x) + 7x * (-3 + x)) = 0
((-3 * 1 + x * 1) + 7x * (-3 + x)) = 0
((-3 + 1x) + 7x * (-3 + x)) = 0
(-3 + 1x + (-3 * 7x + x * 7x)) = 0
(-3 + 1x + (-21x + 7x2)) = 0

Combine like terms: 1x + -21x = -20x
(-3 + -20x + 7x2) = 0

Solving
-3 + -20x + 7x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-1 + -7x)(3 + -1x) = 0

Subproblem 1

Set the factor '(-1 + -7x)' equal to zero and attempt to solve: Simplifying -1 + -7x = 0 Solving -1 + -7x = 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 + -7x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -7x = 0 + 1 -7x = 0 + 1 Combine like terms: 0 + 1 = 1 -7x = 1 Divide each side by '-7'. x = -0.1428571429 Simplifying x = -0.1428571429

Subproblem 2

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {-0.1428571429, 3}

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