3y+3z=-9

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Solution for 3y+3z=-9 equation: 


Simplifying
3y + 3z = -9

Solving
3y + 3z = -9

Solving for variable 'y'.

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

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

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

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

Simplifying
y = -3 + -1z

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