Question

Q1.Solve the given pair of linear equations by using elimination

method :-

(b) 3y-5z=4 and 9y-2z=7
please correct answer batana​

Answer 1

$Answer- 3y-5z=4--1</p><p> 9y-2z=7---2</p><p> multiply 3 in eqn 1</p><p> 9y-15z=12--3</p><p> subtract eqn2 from eqn3</p><p> 9y-15z=12</p><p> -9y+2z=-7</p><p> -13z=5</p><p> z=-5/13</p><p>put this value in eqn 1</p><p>5y-5×-5/13=4</p><p> y=27/65$