x^2+3x=7x-3

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Solution for x^2+3x=7x-3 equation:


Simplifying
x2 + 3x = 7x + -3

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

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

Solving
3x + x2 = -3 + 7x

Solving for variable 'x'.

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

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

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

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

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

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

Subproblem 1

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

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 = {1, 3}

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