7u+6/5 + 6u+3/5=18
the slashes are fractions. thanks again. Last one.
2006-10-19 10:34:21 · 8 answers · asked by snazziemarie 1 in Education & Reference ➔ Homework Help
Thank you guys. That's what I was missing..... adding the like terms.
Thanks!
2006-10-19 10:44:46 · update #1
7u+6/5+6u+3/5=18
5*7u+6+5*6u+3=18
5*7u+6+5*6u+3=5*18
35u+6+5*6u+3=90
35u+6+30u+3=90
35u+30u+9=90
65u=90-9
u=81/65
2006-10-19 10:44:06 · answer #1 · answered by giannis t 1 · 0⤊ 0⤋
7u + 6/5 + 6u + 3/5 = 18
13u + 9/5 = 18
13u = 81/5
u = 81/65
mine r fractions too
2006-10-19 17:39:10 · answer #2 · answered by lîzzîÑ? 2 · 1⤊ 0⤋
7u + 6/5 +6u +3/5 = 18
13u +9/5 = 18
13u +9/5 - 9/5 = 18 - 9/5
13u = 18(5/5) -9/5(1/5)
13u = 90/5 -9/5
13u = 81/5
13u/13 = 81/5 / 13/1
u= 81/5 *1/13
u= 81/65 =1 16/65 ??????
2006-10-19 18:16:28 · answer #3 · answered by Anonymous · 0⤊ 0⤋
U=1.24615
7u+6/5+6u+3/5=18
13u+9/5=18
13u+1+4/5=18
13u+1+.80=18
100(13u+1+.80)=100(18)
1300u+100+80=1800
1300u+180=1800
1300u=1620
1300u/1300=1620/1300
u=1.24615
2006-10-19 17:43:01 · answer #4 · answered by mergs 2 · 0⤊ 0⤋
7u+6/5+6u+3/5=18
(7u+6/5+6u+3/5=18)x5
35u+6+30u+3=90
65u=90-6-3
u=81/65
2006-10-19 17:41:40 · answer #5 · answered by windy288 6 · 0⤊ 0⤋
First you have to add like terms. That would equal to:
13u+9/5=18
Since 6/5 and 3/5 have the same denominator they are like terms...does this help any?
2006-10-19 17:39:39 · answer #6 · answered by Meagan H 3 · 0⤊ 1⤋
first keep like turms together and don't mix them up.
i can't really explain how to do it but i can give you another tip.
show scrap and tell your teacher you don't understand. they like it when you ask for help.
this is the way i see it working:
13u +(6/5 + 3/5)= 18
you need to go from there.
2006-10-19 17:41:41 · answer #7 · answered by apolloK♫ 4 · 0⤊ 0⤋
u=1.25
2006-10-19 17:37:53 · answer #8 · answered by Heather 2 · 0⤊ 1⤋