What is E in (E+24) + 9=2 (E+9)

Distribute 2 throughout the set of parenthesis on the right

(e+24) + 9 = 2e + 18

add 24 and 9 on the left side

e + 33 = 2e + 18

subtract 33 on both sides of the equation

e = 2e - 15

subtract 2e on both sides of the equation

-e = - 15

divide by - 1

e = 15