TI-89 Math - solve() that outputs expression?

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1

<p>I want to use solve() to work out a system of equations (not necessarily all linear), and then get the value of an expression, not just a specific variable.</p>

<p>For example,
I already have:
solve([sin(a)=m,cos(t)=y,m+y=c,a+t=2,a+4*m=2],a)|a>0,m>0,t>0,y>0,c>0
but I don't really care what a equals; I just want the value of a+m+a+t+y+c.</p>

<p>Tips? I am so desperate for the answer right now.
First correct answer gets a free e-cookie.</p>

2

<p>Bump. (10char)</p>

3

<p>Okay, I guess I could introduce another equation in the matrix,
where h=a+m+a+t+y+c, but then now the calculator's not returning
hard numbers when i solve for h; I only get:</p>

<p>h=t+y+2(a+.5(c+m))</p>

<p>instead of a hard number, dammit.</p>

<p>Halp halp, please to be assisting me!?</p>