x(y+40)=(x+10)(y+20)

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Solution for x(y+40)=(x+10)(y+20) equation:


Simplifying
x(y + 40) = (x + 10)(y + 20)

Reorder the terms:
x(40 + y) = (x + 10)(y + 20)
(40 * x + y * x) = (x + 10)(y + 20)
(40x + xy) = (x + 10)(y + 20)

Reorder the terms:
40x + xy = (10 + x)(y + 20)

Reorder the terms:
40x + xy = (10 + x)(20 + y)

Multiply (10 + x) * (20 + y)
40x + xy = (10(20 + y) + x(20 + y))
40x + xy = ((20 * 10 + y * 10) + x(20 + y))
40x + xy = ((200 + 10y) + x(20 + y))
40x + xy = (200 + 10y + (20 * x + y * x))
40x + xy = (200 + 10y + (20x + xy))

Reorder the terms:
40x + xy = (200 + 20x + xy + 10y)
40x + xy = (200 + 20x + xy + 10y)

Add '-1xy' to each side of the equation.
40x + xy + -1xy = 200 + 20x + xy + -1xy + 10y

Combine like terms: xy + -1xy = 0
40x + 0 = 200 + 20x + xy + -1xy + 10y
40x = 200 + 20x + xy + -1xy + 10y

Combine like terms: xy + -1xy = 0
40x = 200 + 20x + 0 + 10y
40x = 200 + 20x + 10y

Solving
40x = 200 + 20x + 10y

Solving for variable 'x'.

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

Add '-20x' to each side of the equation.
40x + -20x = 200 + 20x + -20x + 10y

Combine like terms: 40x + -20x = 20x
20x = 200 + 20x + -20x + 10y

Combine like terms: 20x + -20x = 0
20x = 200 + 0 + 10y
20x = 200 + 10y

Divide each side by '20'.
x = 10 + 0.5y

Simplifying
x = 10 + 0.5y

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