You want to take the number of hours in a day and multiply it by the number of days. So in this case you want to solve: 6 x 24(which is the number of hours in a day) = 144 hours.
If -6d = 42 then 6d = -42. then divide by 6, d = -7
-6d = -42-6(7) = -42d = 7
72-6d=6 subtract 72 from both sides -6d=66 divide by -6 d=-11
yes you can
9d-19=6d+2 ... add 19 to both sides and subtract 6d from both sides... 9d-6d=2+19 3d=21 d=21/3 d=7
The pressure test for API 598 is slightly less pressure and less duration than API 6D. API 6D is specifically for pipeline valves.
API 6D exceeds API 598 in both pressure and duration.
6d = c Divide both sides by 6: d = c/d
3c - 4d = 6d + 4c Subtract 4c from both sides: -c - 4d = 6d Add 4d to both sides: -c = 10d or c = - 10d
sajid
1207 km/h
38.5 h