(1+y)+y=5.50

Solution for (1+y)+y=5.50 equation:

Simplifying
(1 + y) + y = 5.50

Remove parenthesis around (1 + y)
1 + y + y = 5.50

Combine like terms: y + y = 2y
1 + 2y = 5.50

Solving
1 + 2y = 5.50

Solving for variable 'y'.

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

Add '-1' to each side of the equation.
1 + -1 + 2y = 5.50 + -1

Combine like terms: 1 + -1 = 0
0 + 2y = 5.50 + -1
2y = 5.50 + -1

Combine like terms: 5.50 + -1 = 4.5
2y = 4.5

Divide each side by '2'.
y = 2.25

Simplifying
y = 2.25