3(x-7)=7(x+3y)-3y

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Solution for 3(x-7)=7(x+3y)-3y equation:


Simplifying
3(x + -7) = 7(x + 3y) + -3y

Reorder the terms:
3(-7 + x) = 7(x + 3y) + -3y
(-7 * 3 + x * 3) = 7(x + 3y) + -3y
(-21 + 3x) = 7(x + 3y) + -3y
-21 + 3x = (x * 7 + 3y * 7) + -3y
-21 + 3x = (7x + 21y) + -3y

Combine like terms: 21y + -3y = 18y
-21 + 3x = 7x + 18y

Solving
-21 + 3x = 7x + 18y

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.
-21 + 3x + -7x = 7x + -7x + 18y

Combine like terms: 3x + -7x = -4x
-21 + -4x = 7x + -7x + 18y

Combine like terms: 7x + -7x = 0
-21 + -4x = 0 + 18y
-21 + -4x = 18y

Add '21' to each side of the equation.
-21 + 21 + -4x = 21 + 18y

Combine like terms: -21 + 21 = 0
0 + -4x = 21 + 18y
-4x = 21 + 18y

Divide each side by '-4'.
x = -5.25 + -4.5y

Simplifying
x = -5.25 + -4.5y

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