-(5y+4)-(-4y-6)=-1

Solution for -(5y+4)-(-4y-6)=-1 equation:

Simplifying
-1(5y + 4) + -1(-4y + -6) = -1

Reorder the terms:
-1(4 + 5y) + -1(-4y + -6) = -1
(4 * -1 + 5y * -1) + -1(-4y + -6) = -1
(-4 + -5y) + -1(-4y + -6) = -1

Reorder the terms:
-4 + -5y + -1(-6 + -4y) = -1
-4 + -5y + (-6 * -1 + -4y * -1) = -1
-4 + -5y + (6 + 4y) = -1

Reorder the terms:
-4 + 6 + -5y + 4y = -1

Combine like terms: -4 + 6 = 2
2 + -5y + 4y = -1

Combine like terms: -5y + 4y = -1y
2 + -1y = -1

Solving
2 + -1y = -1

Solving for variable 'y'.

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

Add '-2' to each side of the equation.
2 + -2 + -1y = -1 + -2

Combine like terms: 2 + -2 = 0
0 + -1y = -1 + -2
-1y = -1 + -2

Combine like terms: -1 + -2 = -3
-1y = -3

Divide each side by '-1'.
y = 3

Simplifying
y = 3