solve plz!! need help
2007-10-13 08:40:01 · 8 answers · asked by gurjotgrewal_2 1 in Science & Mathematics ➔ Mathematics
Hi,
First, you need to get a Common Denominator by multiplying the numerator/denominator of the first fraction by 3 and the second fraction's numerator/denominator by 5 to get:
3u / 15 + 10u / 15 = 11/2
Now, add the fractions on the left sides of the equation to get:
13u / 15 = 11/2
At this point, you can cross multiply to get:
26u = 165
Next, isolate for "u" by dividing both sides by 26 to get:
u = 6.346 <==== FINAL ANSWER
I hope that helps you out! Please let me know if you have any other questions!
Sincerely,
Andrew
2007-10-13 09:38:12 · answer #1 · answered by The VC 06 7 · 0⤊ 0⤋
u/5 + 2u/3 = 11/2
Multiply both sides by 30, the LCD of the fractions
6u + 20u = 165
26u = 165
u = 165/26
2007-10-13 15:51:50 · answer #2 · answered by kindricko 7 · 0⤊ 1⤋
u/5 + 2u/3 =11/2---------*30
6u+20u=165
26u=165
u=165/26=6.346153846
2007-10-13 15:47:31 · answer #3 · answered by Anonymous · 0⤊ 1⤋
multiply the whole equation by 30 so you lose all fractions
6u + 20u = 165
26u = 165
u = 165/26
2007-10-13 15:46:55 · answer #4 · answered by mm 2 · 0⤊ 1⤋
u = 165/26
2007-10-13 19:47:14 · answer #5 · answered by UNIQUE 3 · 0⤊ 1⤋
6u + 20u = 165
26u = 165
u = 165 / 26
2007-10-16 06:17:36 · answer #6 · answered by Como 7 · 0⤊ 1⤋
3u+10u/15=11/2
13u/15=11/2
u=165/26
2007-10-13 19:08:02 · answer #7 · answered by rajini 2 · 0⤊ 1⤋
multiply thru by 30
6u+20u=165
26u=165
2007-10-13 15:48:15 · answer #8 · answered by Kenneth H 3 · 0⤊ 1⤋