Question

If a=2b,3b=4c, and 5c=6a-7, what is the value of c?

Answer 1

Confusing LOL :/

Answer 2

sorry that should be this

you want an equation with only one letter in it.

so multiply the first and second equations by 3 to get

3a = 6b and 9b = 12c

from here we can see that

4.5a = 9b = 12c

now do similar to get a in terms of c. Then you can replace this into the final equation and solve for c

Answer 3

how are you getting on?