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

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


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

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

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

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

Combine like terms: -7x + 3x = -4x
(7 + -4x + -3x2) = 7

Add '-7' to each side of the equation.
7 + -4x + -7 + -3x2 = 7 + -7

Reorder the terms:
7 + -7 + -4x + -3x2 = 7 + -7

Combine like terms: 7 + -7 = 0
0 + -4x + -3x2 = 7 + -7
-4x + -3x2 = 7 + -7

Combine like terms: 7 + -7 = 0
-4x + -3x2 = 0

Solving
-4x + -3x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '-1x'.
-1x(4 + 3x) = 0

Ignore the factor -1.

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(4 + 3x)' equal to zero and attempt to solve: Simplifying 4 + 3x = 0 Solving 4 + 3x = 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 + 3x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 3x = 0 + -4 3x = 0 + -4 Combine like terms: 0 + -4 = -4 3x = -4 Divide each side by '3'. x = -1.333333333 Simplifying x = -1.333333333

Solution

x = {0, -1.333333333}

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