Solve the following pair of linear equations by the substitution method.

Chapter 3 Pair of Linear Equations in Two Variables Page no. 53 Exercise 3.3
Problem 1: Solve the following pair of linear equations by the substitution method.
(i) x + y = 14 x - y = 4
(ii) s - t = 3 s/3 + t/2 = 6
(iii) 3x - y = 3 9x - 3y = 9
(iv) 0.2x +0.3y = 1.3 0.4x + 0.5y = 2.3
(v) √2x + √3y = 0 √3x - √8y = 0
(vi) 3x/2 - 5y/3 = -2 x/3 + y/2 = 13/6
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