\[\boxed{\text{33\ (33).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ Если\ a = 40,\ то:\]
\[a + 347 = 40 + 347 = 387.\]
\[a - 39 = 40 - 39 = 1.\]
\[2)\ Если\ a = 53,\ то:\]
\[a + 347 = 53 + 347 = 400.\]
\[a - 39 = 53 - 39 = 14.\]
\[3)\ Если\ a = 282,\ то:\]
\[a + 347 = 282 + 347 = 629.\]
\[a - 39 = 282 - 39 = 243.\]
\[4)\ Если\ a = 558,\ то:\]
\[a + 347 = 558 + 347 = 905.\]
\[a - 39 = 558 - 39 = 519\text{.\ }\]