23=3+2(h+9)

Solution for 23=3+2(h+9) equation:

Simplifying
23 = 3 + 2(h + 9)

Reorder the terms:
23 = 3 + 2(9 + h)
23 = 3 + (9 * 2 + h * 2)
23 = 3 + (18 + 2h)

Combine like terms: 3 + 18 = 21
23 = 21 + 2h

Solving
23 = 21 + 2h

Solving for variable 'h'.

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

Add '-2h' to each side of the equation.
23 + -2h = 21 + 2h + -2h

Combine like terms: 2h + -2h = 0
23 + -2h = 21 + 0
23 + -2h = 21

Add '-23' to each side of the equation.
23 + -23 + -2h = 21 + -23

Combine like terms: 23 + -23 = 0
0 + -2h = 21 + -23
-2h = 21 + -23

Combine like terms: 21 + -23 = -2
-2h = -2

Divide each side by '-2'.
h = 1

Simplifying
h = 1