Задание

Найдите сумму десятичных дробей:

 \(\displaystyle 3\)\(\displaystyle ,\)\(\displaystyle 4\)\(\displaystyle 5\)
\(\displaystyle +\)    
 \(\displaystyle 1\)\(\displaystyle ,\)\(\displaystyle 8\)\(\displaystyle 7\)
 
 [ ]\(\displaystyle ,\)[ ][ ]