x^2+3x+x^2+2x=2(x^2+5x+6)

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Solution for x^2+3x+x^2+2x=2(x^2+5x+6) equation:


Simplifying
x2 + 3x + x2 + 2x = 2(x2 + 5x + 6)

Reorder the terms:
3x + 2x + x2 + x2 = 2(x2 + 5x + 6)

Combine like terms: 3x + 2x = 5x
5x + x2 + x2 = 2(x2 + 5x + 6)

Combine like terms: x2 + x2 = 2x2
5x + 2x2 = 2(x2 + 5x + 6)

Reorder the terms:
5x + 2x2 = 2(6 + 5x + x2)
5x + 2x2 = (6 * 2 + 5x * 2 + x2 * 2)
5x + 2x2 = (12 + 10x + 2x2)

Add '-2x2' to each side of the equation.
5x + 2x2 + -2x2 = 12 + 10x + 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
5x + 0 = 12 + 10x + 2x2 + -2x2
5x = 12 + 10x + 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
5x = 12 + 10x + 0
5x = 12 + 10x

Solving
5x = 12 + 10x

Solving for variable 'x'.

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

Add '-10x' to each side of the equation.
5x + -10x = 12 + 10x + -10x

Combine like terms: 5x + -10x = -5x
-5x = 12 + 10x + -10x

Combine like terms: 10x + -10x = 0
-5x = 12 + 0
-5x = 12

Divide each side by '-5'.
x = -2.4

Simplifying
x = -2.4

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