your question:
(2x + 3) + 90 = 180 solve for x
answer:
(2x + 3) + 90 = 180 ~ remove the already reduced parenthesis
2x + 3 + 90 = 180 ~ add numbers together
2x + 93 = 180 ~ subtract 93 from both sides
2x = 87 ~ divide by two on both sides to find x
x = 43.5
x = 43.5 or x= 43 ½ (fraction form)
Hope this helps, have a great day! :)