Даны векторы \(\displaystyle \overrightarrow {a} (2;3)\) и \(\displaystyle \overrightarrow {b}(3;9).\) Найдите координаты вектора \(\displaystyle \overrightarrow {a}+ \overrightarrow {b}.\)

Координаты вектора \(\displaystyle \overrightarrow {a}+ \overrightarrow {b}{:}\)

\(\displaystyle (\)[ ]\(\displaystyle ;\)[ ]\(\displaystyle )\)