It says to solve each proportion which I forgot how to do. Please help.
9 over 15 = x over 10
C over 14 = 6 over 21
0.2 over 1.5 = 2 over D
2x over 6 = 4x+8 over 15
9 over 15 = x over 10
C over 14 = 6 over 21
0.2 over 1.5 = 2 over D
2x over 6 = 4x+8 over 15