(3x+5)(x-10)-3x(x-10)=0

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Solution for (3x+5)(x-10)-3x(x-10)=0 equation:


Simplifying
(3x + 5)(x + -10) + -3x(x + -10) = 0

Reorder the terms:
(5 + 3x)(x + -10) + -3x(x + -10) = 0

Reorder the terms:
(5 + 3x)(-10 + x) + -3x(x + -10) = 0

Multiply (5 + 3x) * (-10 + x)
(5(-10 + x) + 3x * (-10 + x)) + -3x(x + -10) = 0
((-10 * 5 + x * 5) + 3x * (-10 + x)) + -3x(x + -10) = 0
((-50 + 5x) + 3x * (-10 + x)) + -3x(x + -10) = 0
(-50 + 5x + (-10 * 3x + x * 3x)) + -3x(x + -10) = 0
(-50 + 5x + (-30x + 3x2)) + -3x(x + -10) = 0

Combine like terms: 5x + -30x = -25x
(-50 + -25x + 3x2) + -3x(x + -10) = 0

Reorder the terms:
-50 + -25x + 3x2 + -3x(-10 + x) = 0
-50 + -25x + 3x2 + (-10 * -3x + x * -3x) = 0
-50 + -25x + 3x2 + (30x + -3x2) = 0

Reorder the terms:
-50 + -25x + 30x + 3x2 + -3x2 = 0

Combine like terms: -25x + 30x = 5x
-50 + 5x + 3x2 + -3x2 = 0

Combine like terms: 3x2 + -3x2 = 0
-50 + 5x + 0 = 0
-50 + 5x = 0

Solving
-50 + 5x = 0

Solving for variable 'x'.

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

Add '50' to each side of the equation.
-50 + 50 + 5x = 0 + 50

Combine like terms: -50 + 50 = 0
0 + 5x = 0 + 50
5x = 0 + 50

Combine like terms: 0 + 50 = 50
5x = 50

Divide each side by '5'.
x = 10

Simplifying
x = 10

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