3(85-4y)+2x=105

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Solution for 3(85-4y)+2x=105 equation: 


Simplifying
3(85 + -4y) + 2x = 105
(85 * 3 + -4y * 3) + 2x = 105
(255 + -12y) + 2x = 105

Reorder the terms:
255 + 2x + -12y = 105

Solving
255 + 2x + -12y = 105

Solving for variable 'x'.

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

Add '-255' to each side of the equation.
255 + 2x + -255 + -12y = 105 + -255

Reorder the terms:
255 + -255 + 2x + -12y = 105 + -255

Combine like terms: 255 + -255 = 0
0 + 2x + -12y = 105 + -255
2x + -12y = 105 + -255

Combine like terms: 105 + -255 = -150
2x + -12y = -150

Add '12y' to each side of the equation.
2x + -12y + 12y = -150 + 12y

Combine like terms: -12y + 12y = 0
2x + 0 = -150 + 12y
2x = -150 + 12y

Divide each side by '2'.
x = -75 + 6y

Simplifying
x = -75 + 6y

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