y-(-3)=0(x-0)

Solution for y-(-3)=0(x-0) equation:

Simplifying
y + -1(-3) = 0(x + 0)

Multiply -1 * -3
y + 3 = 0(x + 0)

Reorder the terms:
3 + y = 0(x + 0)

Reorder the terms:
3 + y = 0(0 + x)
Remove the zero:
3 + y = 0(x)

Anything times zero is zero.
3 + y = 0x

Solving
3 + y = 0

Solving for variable 'y'.

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

Add '-3' to each side of the equation.
3 + -3 + y = 0 + -3

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

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

Simplifying
y = -3