12y+6+4y-3=90

Solution for 12y+6+4y-3=90 equation:

Simplifying
12y + 6 + 4y + -3 = 90

Reorder the terms:
6 + -3 + 12y + 4y = 90

Combine like terms: 6 + -3 = 3
3 + 12y + 4y = 90

Combine like terms: 12y + 4y = 16y
3 + 16y = 90

Solving
3 + 16y = 90

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 + 16y = 90 + -3

Combine like terms: 3 + -3 = 0
0 + 16y = 90 + -3
16y = 90 + -3

Combine like terms: 90 + -3 = 87
16y = 87

Divide each side by '16'.
y = 5.4375

Simplifying
y = 5.4375