A chef bought $17.01 worth of ribs and chicken. Ribs cost $1.89 per pound and chicken costs $0.90 per pound. The original equation 0.9c+1.89r=17.01 0.9
c
+
1.89
r
=
17.01
represents the relationship between the quantities in the situation.

Show the steps of how the original equation is equivalent to the equation: c=18.9−2.1r
c
=
18.9
−
2.1
r
.