help with this substitution

5a = 5 - b

5a = 3 - b

I got the solution set to be 1/2, 5/2

i used substitution for substituting a into b of the second equation, just like they were x's and y's just used a's and b's there is no difference correct?

a = 1- b/5 from top equation.

then 5(1-b/5) = 3 - b

==5/2

then for 1/2 I substituted the b= 5/2 back into one of the original equations.

Does this look correct? Thanks alot.

Re: help with this substitution

Quote:

5a = 5 - b

5a = 3 - b

this system of equations has no solution ... think about why.