(y-(-57))=-3(x-(-18))

Solution for (y-(-57))=-3(x-(-18)) equation:

Simplifying
(y + -1(-57)) = -3(x + -1(-18))

Multiply -1 * -57
(y + 57) = -3(x + -1(-18))

Reorder the terms:
(57 + y) = -3(x + -1(-18))

Remove parenthesis around (57 + y)
57 + y = -3(x + -1(-18))

Multiply -1 * -18
57 + y = -3(x + 18)

Reorder the terms:
57 + y = -3(18 + x)
57 + y = (18 * -3 + x * -3)
57 + y = (-54 + -3x)

Solving
57 + y = -54 + -3x

Solving for variable 'y'.

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

Add '-57' to each side of the equation.
57 + -57 + y = -54 + -57 + -3x

Combine like terms: 57 + -57 = 0
0 + y = -54 + -57 + -3x
y = -54 + -57 + -3x

Combine like terms: -54 + -57 = -111
y = -111 + -3x

Simplifying
y = -111 + -3x