Question

решите неравенство 3(3х-5)-9<27х-60

Answer 1

3(3х-5)-9<27x-60
9x-15-9-27x<-60
-18x<-36
18x>36
x>2

Answer 2

3(3x-5)=27x-60
9x-15=27x-60
-18x=-45
x=2,5