Выполните приведение подобных слагаемых в выражении:

\(\displaystyle 12+5s-27+s-4+2s+19+7s=\)

\(\displaystyle =\big(\)[ ]\(\displaystyle +\)[ ]\(\displaystyle +\)[ ]\(\displaystyle +\)[ ]\(\displaystyle \big)\,s+\,\)[ ]\(\displaystyle =\)[ ]\(\displaystyle \,s+\,\)[ ]