0=3y+42-9y

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Solution for 0=3y+42-9y equation: 


Simplifying
0 = 3y + 42 + -9y

Reorder the terms:
0 = 42 + 3y + -9y

Combine like terms: 3y + -9y = -6y
0 = 42 + -6y

Solving
0 = 42 + -6y

Solving for variable 'y'.

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

Add '6y' to each side of the equation.
0 + 6y = 42 + -6y + 6y
Remove the zero:
6y = 42 + -6y + 6y

Combine like terms: -6y + 6y = 0
6y = 42 + 0
6y = 42

Divide each side by '6'.
y = 7

Simplifying
y = 7

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