Y-9=3(x-(-1))

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Solution for Y-9=3(x-(-1)) equation: 


Simplifying
Y + -9 = 3(x + -1(-1))

Reorder the terms:
-9 + Y = 3(x + -1(-1))

Multiply -1 * -1
-9 + Y = 3(x + 1)

Reorder the terms:
-9 + Y = 3(1 + x)
-9 + Y = (1 * 3 + x * 3)
-9 + Y = (3 + 3x)

Solving
-9 + Y = 3 + 3x

Solving for variable 'Y'.

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

Add '9' to each side of the equation.
-9 + 9 + Y = 3 + 9 + 3x

Combine like terms: -9 + 9 = 0
0 + Y = 3 + 9 + 3x
Y = 3 + 9 + 3x

Combine like terms: 3 + 9 = 12
Y = 12 + 3x

Simplifying
Y = 12 + 3x

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