2(-3+-0.25y)+5y=6

Solution for 2(-3+-0.25y)+5y=6 equation:

Simplifying
2(-3 + -0.25y) + 5y = 6
(-3 * 2 + -0.25y * 2) + 5y = 6
(-6 + -0.5y) + 5y = 6

Combine like terms: -0.5y + 5y = 4.5y
-6 + 4.5y = 6

Solving
-6 + 4.5y = 6

Solving for variable 'y'.

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

Add '6' to each side of the equation.
-6 + 6 + 4.5y = 6 + 6

Combine like terms: -6 + 6 = 0
0 + 4.5y = 6 + 6
4.5y = 6 + 6

Combine like terms: 6 + 6 = 12
4.5y = 12

Divide each side by '4.5'.
y = 2.666666667

Simplifying
y = 2.666666667