16=4+y^2+1

Solution for 16=4+y^2+1 equation:

Simplifying
16 = 4 + y2 + 1

Reorder the terms:
16 = 4 + 1 + y2

Combine like terms: 4 + 1 = 5
16 = 5 + y2

Solving
16 = 5 + y2

Solving for variable 'y'.

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

Add '-1y2' to each side of the equation.
16 + -1y2 = 5 + y2 + -1y2

Combine like terms: y2 + -1y2 = 0
16 + -1y2 = 5 + 0
16 + -1y2 = 5

Add '-16' to each side of the equation.
16 + -16 + -1y2 = 5 + -16

Combine like terms: 16 + -16 = 0
0 + -1y2 = 5 + -16
-1y2 = 5 + -16

Combine like terms: 5 + -16 = -11
-1y2 = -11

Divide each side by '-1'.
y2 = 11

Simplifying
y2 = 11

Take the square root of each side:
y = {-3.31662479, 3.31662479}