Question

substitution method solve 2x-3y/4=3​

Answer 1

$2x - 3y/ 4 = 3 …..(i)  5x = 2y + 7 ……..(ii)  On multiplying (i) by 2 and (ii) by 3/4 , we get:  4x - 3/2 y = 6 …...(iii)  15/4 x = 3/2 y + 21/ 4 ….(iv)  On subtracting (iii) and (iv), we get:  - 1/4 x = - 3/ 4  ⇒x = 3  On substituting x = 3 in (i), we get:  2 × 3 - 3y/4 = 3  ⇒ 3y/4 = (6 – 3) = 3  ⇒y = (3 ×4 )/3 = 4  Hence, the solution is x = 3 and y = 4.$