(21x-5y)-(15y+4x)=

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Solution for (21x-5y)-(15y+4x)= equation:


Simplifying
(21x + -5y) + -1(15y + 4x) = 0

Remove parenthesis around (21x + -5y)
21x + -5y + -1(15y + 4x) = 0

Reorder the terms:
21x + -5y + -1(4x + 15y) = 0
21x + -5y + (4x * -1 + 15y * -1) = 0
21x + -5y + (-4x + -15y) = 0

Reorder the terms:
21x + -4x + -5y + -15y = 0

Combine like terms: 21x + -4x = 17x
17x + -5y + -15y = 0

Combine like terms: -5y + -15y = -20y
17x + -20y = 0

Solving
17x + -20y = 0

Solving for variable 'x'.

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

Add '20y' to each side of the equation.
17x + -20y + 20y = 0 + 20y

Combine like terms: -20y + 20y = 0
17x + 0 = 0 + 20y
17x = 0 + 20y
Remove the zero:
17x = 20y

Divide each side by '17'.
x = 1.176470588y

Simplifying
x = 1.176470588y

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