(2x-5)*(6+x)=2x^2-7x+12

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Solution for (2x-5)*(6+x)=2x^2-7x+12 equation:


Simplifying
(2x + -5)(6 + x) = 2x2 + -7x + 12

Reorder the terms:
(-5 + 2x)(6 + x) = 2x2 + -7x + 12

Multiply (-5 + 2x) * (6 + x)
(-5(6 + x) + 2x * (6 + x)) = 2x2 + -7x + 12
((6 * -5 + x * -5) + 2x * (6 + x)) = 2x2 + -7x + 12
((-30 + -5x) + 2x * (6 + x)) = 2x2 + -7x + 12
(-30 + -5x + (6 * 2x + x * 2x)) = 2x2 + -7x + 12
(-30 + -5x + (12x + 2x2)) = 2x2 + -7x + 12

Combine like terms: -5x + 12x = 7x
(-30 + 7x + 2x2) = 2x2 + -7x + 12

Reorder the terms:
-30 + 7x + 2x2 = 12 + -7x + 2x2

Add '-2x2' to each side of the equation.
-30 + 7x + 2x2 + -2x2 = 12 + -7x + 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-30 + 7x + 0 = 12 + -7x + 2x2 + -2x2
-30 + 7x = 12 + -7x + 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-30 + 7x = 12 + -7x + 0
-30 + 7x = 12 + -7x

Solving
-30 + 7x = 12 + -7x

Solving for variable 'x'.

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

Add '7x' to each side of the equation.
-30 + 7x + 7x = 12 + -7x + 7x

Combine like terms: 7x + 7x = 14x
-30 + 14x = 12 + -7x + 7x

Combine like terms: -7x + 7x = 0
-30 + 14x = 12 + 0
-30 + 14x = 12

Add '30' to each side of the equation.
-30 + 30 + 14x = 12 + 30

Combine like terms: -30 + 30 = 0
0 + 14x = 12 + 30
14x = 12 + 30

Combine like terms: 12 + 30 = 42
14x = 42

Divide each side by '14'.
x = 3

Simplifying
x = 3

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