any help will be greatly appreciated..
1. If ab + b =a +2c, what is the value of b when a=2 and c=3?
2006-09-28 17:37:36 · 8 answers · asked by ~Mo~lovin<3 2 in Education & Reference ➔ Homework Help
tree and fiddy
2006-09-28 17:39:26 · answer #1 · answered by Anonymous · 0⤊ 0⤋
ab + b =a +2c
(a+1)b=a+2c
(2+1)b=2+2(3)
3b=2+6
3b=8
b=8/3
2006-09-28 17:45:48 · answer #2 · answered by Alex W 2 · 0⤊ 0⤋
ab+bc=a+2c
b(a+c)=a+2c)
b=a+2c / a+c
substituting the given values
b=2+6/2+3=8/5
2006-09-28 17:40:51 · answer #3 · answered by raj 7 · 0⤊ 0⤋
The answerers who wrote the equation out then substituted the values given were on the right track bu tthe ones whoe showed their work made mistakes!
first substitue the values 2b + b = 2 + 2x3 given a = 2 and c = 3
so on the left you have 2b + 1b
on the right 2 + 6
keep going on each side until you need to work on both sides by doing the same on each side to get the b standing alone as b = ???
2006-09-28 17:56:54 · answer #4 · answered by JA 3 · 0⤊ 0⤋
substituting the values of a and c into the equation one obtains:2(b)+b=2+2(3) that rewrited gives:2b+b=2+6 rewrited again gives :3b=8 therfore by transposing for b,b=8/3
2006-09-28 17:51:04 · answer #5 · answered by Tony B 2 · 0⤊ 0⤋
substitute you get 3b=8 so b=8/3 or 2.6666666.... long way a=2;c=3 so 2b+b=2+2c then 2b+b=2+(2*3) then 3b=8 so b=8/3
2006-09-28 17:44:08 · answer #6 · answered by paulofhouston 6 · 0⤊ 0⤋
2b+b=2+6
3b=8
b=8/3= 2 2/3
2006-09-28 17:48:31 · answer #7 · answered by 123321m 3 · 0⤊ 0⤋
plug it in
2b+b=2+2(3)
3b=8
b=8/3
2006-09-28 17:45:27 · answer #8 · answered by G... 2 · 0⤊ 0⤋