21 is the correct answer. You can also used pemdas stands for: p-parenthesis, e-exponents, m-multiply, d-divide, a-add, s-subtracting. First you had to add and subtracting from left to right, and it gave us, [tex]4+(9)=13[/tex], [tex]13+2-(-6)[/tex], [tex]13+2=15-(-6)[/tex]. And then apply rule, and it gave us, [tex]-(-6)=+6[/tex], or [tex]15+6=21[/tex]. 21 is the correct answer. Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie
