1.

If `(p+q)/(r+s)=(t+u)/(v+w)`. Express v in terms of p,q,r,s and w.

Answer» `(p+q)/(r+s)=(t+u)/(v+w)`
`implies(p+q)(v+w)=(t+u)(r+s)`
`impliesv(p+q)=(t+u)(r+s)-w(p+q)`
`impliesv=((t+u)(r+s)-(p+q)w)/(p+q)`


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