q = c * p * (t2 - t1)
t2 - t1 = q/(c*p)
t1 - t2 = -q/(c*p)
t1 = t2 - q/(c*p)
q=cm(t₂-t₁)
t₂-t₁=q/cm
-t₁=q/cm-t₂
t₁=-q/cm+t₂
q = c * p * (t2 - t1)
t2 - t1 = q/(c*p)
t1 - t2 = -q/(c*p)
t1 = t2 - q/(c*p)
q=cm(t₂-t₁)
t₂-t₁=q/cm
-t₁=q/cm-t₂
t₁=-q/cm+t₂