Question

Solve the pair of linear equation by substitution method
x - 2y = 15
2x - y = 4​

Answer 1

ritik987

Virtuoso

38 answers

5K people helped

Here, 2x – y = 2

⟹ y = 2x – 2

⟹ x + 3y = 15

Substituting the value of y from (i) in (ii), we get

x + 6x – 6 = 15

⟹ 7x = 21

⟹ x = 3

From (i), y = 2 × 3 – 2 = 4

∴ x = 3 and y = 4