(x-y)=0.75(x+y)

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Solution for (x-y)=0.75(x+y) equation:


Simplifying
(x + -1y) = 0.75(x + y)

Remove parenthesis around (x + -1y)
x + -1y = 0.75(x + y)
x + -1y = (x * 0.75 + y * 0.75)
x + -1y = (0.75x + 0.75y)

Solving
x + -1y = 0.75x + 0.75y

Solving for variable 'x'.

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

Add '-0.75x' to each side of the equation.
x + -0.75x + -1y = 0.75x + -0.75x + 0.75y

Combine like terms: x + -0.75x = 0.25x
0.25x + -1y = 0.75x + -0.75x + 0.75y

Combine like terms: 0.75x + -0.75x = 0.00
0.25x + -1y = 0.00 + 0.75y
0.25x + -1y = 0.75y

Add 'y' to each side of the equation.
0.25x + -1y + y = 0.75y + y

Combine like terms: -1y + y = 0
0.25x + 0 = 0.75y + y
0.25x = 0.75y + y

Combine like terms: 0.75y + y = 1.75y
0.25x = 1.75y

Divide each side by '0.25'.
x = 7y

Simplifying
x = 7y

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