3x+18y-(2x+y)+9=12

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Solution for 3x+18y-(2x+y)+9=12 equation:


Simplifying
3x + 18y + -1(2x + y) + 9 = 12
3x + 18y + (2x * -1 + y * -1) + 9 = 12
3x + 18y + (-2x + -1y) + 9 = 12

Reorder the terms:
9 + 3x + -2x + 18y + -1y = 12

Combine like terms: 3x + -2x = 1x
9 + 1x + 18y + -1y = 12

Combine like terms: 18y + -1y = 17y
9 + 1x + 17y = 12

Solving
9 + 1x + 17y = 12

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + 1x + -9 + 17y = 12 + -9

Reorder the terms:
9 + -9 + 1x + 17y = 12 + -9

Combine like terms: 9 + -9 = 0
0 + 1x + 17y = 12 + -9
1x + 17y = 12 + -9

Combine like terms: 12 + -9 = 3
1x + 17y = 3

Add '-17y' to each side of the equation.
1x + 17y + -17y = 3 + -17y

Combine like terms: 17y + -17y = 0
1x + 0 = 3 + -17y
1x = 3 + -17y

Divide each side by '1'.
x = 3 + -17y

Simplifying
x = 3 + -17y

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