Let's take the number as x.
two-fifths of a number = 2x / 5
decreased by 3 = (2x/5) - 3
(2x/5) - 3
(2*25/5) - 3
(2*5) - 3
10 - 3
7
-7-5+3=1
-12+3=1
-9≠1. As a result, this is False. Hope it help!
If you just want to know what is the least common multiple of 20 and 15, it is 60. Usually, this is written as
lcm(20,15) = 60
The measure of the third angle is 74
13.42 is how long the wire is to the nearest hundredth of a foot
