Solving Equations by Cross Multiplication Solve each proportion 1) n 5 = 6 7 2) 4 8 = v 6 3) 9 7 = k 2 4) 2 10 = 10 x 5) 7 5 = 6 n 6) 4 9 = 9 m 7) b 9 = 10 3 8) 3 6 = 5 r 9) 5 4 = p 5 10) x 10 = 9 6Y =x Skip to main content close Start your trial now!Example 7 Solve the following pair of equations by substitution method 7x – 15y = 2 x 2y = 3 7x – 15y = 2 x 2y = 3 From (1) 7x – 15y = 2 7x = 2 15y x = (𝟐 𝟏𝟓𝒚)/𝟕 Substituting the Ex 3 4 1 I Class 10 Solve By Elimination And Substitution X/2 y=0.8 7/x y/2=10 by cross multiplication