(-3+3y)+y=9

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Solution for (-3+3y)+y=9 equation:


Simplifying
(-3 + 3y) + y = 9

Remove parenthesis around (-3 + 3y)
-3 + 3y + y = 9

Combine like terms: 3y + y = 4y
-3 + 4y = 9

Solving
-3 + 4y = 9

Solving for variable 'y'.

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

Add '3' to each side of the equation.
-3 + 3 + 4y = 9 + 3

Combine like terms: -3 + 3 = 0
0 + 4y = 9 + 3
4y = 9 + 3

Combine like terms: 9 + 3 = 12
4y = 12

Divide each side by '4'.
y = 3

Simplifying
y = 3

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