y-1=3*-3

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Solution for y-1=3*-3 equation: 


Simplifying
y + -1 = 3 * -3

Reorder the terms:
-1 + y = 3 * -3

Multiply 3 * -3
-1 + y = -9

Solving
-1 + y = -9

Solving for variable 'y'.

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

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

Combine like terms: -1 + 1 = 0
0 + y = -9 + 1
y = -9 + 1

Combine like terms: -9 + 1 = -8
y = -8

Simplifying
y = -8

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