" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
|1-7x|<13 /:7
|1/7-x| < 13/7
Sa o liczby odlegle na osi od 1/7 blizej niz o 13/7
1/7-13/7=-12/7
1/7+13/7=2
Odp. x∈(-12/7, 2)