3y+18=-18

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Solution for 3y+18=-18 equation: 


Simplifying
3y + 18 = -18

Reorder the terms:
18 + 3y = -18

Solving
18 + 3y = -18

Solving for variable 'y'.

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

Add '-18' to each side of the equation.
18 + -18 + 3y = -18 + -18

Combine like terms: 18 + -18 = 0
0 + 3y = -18 + -18
3y = -18 + -18

Combine like terms: -18 + -18 = -36
3y = -36

Divide each side by '3'.
y = -12

Simplifying
y = -12

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