y=15-3x+y

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Solution for y=15-3x+y equation:


Simplifying
y = 15 + -3x + y

Add '-1y' to each side of the equation.
y + -1y = 15 + -3x + y + -1y

Combine like terms: y + -1y = 0
0 = 15 + -3x + y + -1y

Combine like terms: y + -1y = 0
0 = 15 + -3x + 0
0 = 15 + -3x

Solving
0 = 15 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
0 + 3x = 15 + -3x + 3x
Remove the zero:
3x = 15 + -3x + 3x

Combine like terms: -3x + 3x = 0
3x = 15 + 0
3x = 15

Divide each side by '3'.
x = 5

Simplifying
x = 5

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