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

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Solution for 9+x=(x+3y)+7 equation:


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

Remove parenthesis around (x + 3y)
9 + x = x + 3y + 7

Reorder the terms:
9 + x = 7 + x + 3y

Add '-1x' to each side of the equation.
9 + x + -1x = 7 + x + -1x + 3y

Combine like terms: x + -1x = 0
9 + 0 = 7 + x + -1x + 3y
9 = 7 + x + -1x + 3y

Combine like terms: x + -1x = 0
9 = 7 + 0 + 3y
9 = 7 + 3y

Solving
9 = 7 + 3y

Solving for variable 'y'.

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

Add '-3y' to each side of the equation.
9 + -3y = 7 + 3y + -3y

Combine like terms: 3y + -3y = 0
9 + -3y = 7 + 0
9 + -3y = 7

Add '-9' to each side of the equation.
9 + -9 + -3y = 7 + -9

Combine like terms: 9 + -9 = 0
0 + -3y = 7 + -9
-3y = 7 + -9

Combine like terms: 7 + -9 = -2
-3y = -2

Divide each side by '-3'.
y = 0.6666666667

Simplifying
y = 0.6666666667

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