Wednesday

July 23, 2014

July 23, 2014

Posted by **Sue** on Monday, November 26, 2012 at 11:46am.

I have

a=3c f=a-16 a-1=2(c-1 + f-1)

and I don't understand what comes next and why

- algebra -
**Steve**, Monday, November 26, 2012 at 11:56ama=3c

f=a-16

a-1=2(c-1 + f-1)

so far, so good. Now start substituting. First, get rid of a:

f = 3c-16

3c-1 = 2(f+c-2)

Now get rid of the f:

3c-1 = 2((3c-16)+c-2)

3c-1 = 2(4c-18)

3c-1 = 8c - 36

5c = 35

c = 7

so, f = 3c-16 = 5

and a = 3c = 21

**Related Questions**

algebra - I need the algebra sentence for the following problem..Adam is 3 times...

math - Adam is 3 times as old as Cynthia and Fred is 16 years younger than Adam...

math - Adam is 3 times as old as Cynthia and Fred is 16 years younger than Adam...

Ms. Sue Please HELP - Adam is 5 years younger than Eve. In 1 year, Eve will be ...

math - i never can do word problems....please help... i got 7 of them.....these ...

9th grade math word problems - i never can do word problems....please help... i ...

math,(fraction) - Adam and Rahmad shared some beads.if Adam gave one-third of ...

Repost: English for Adam - english - adam, Monday, September 10, 2007 at 5:26pm ...

Math - Adam and Bob went apple picking in an orchard. At the end of the day, ...

math - Adam and Bob went apple picking in an orchard. At the end of the day, ...