Question

elimination
Solve the given pair of lineay equations by using
thod :-
3y-5z=4 and 9y-2z=7
​

Answer 1

Answer:

equation is =

3y-5z=4, 9y-2z=7

multiply equation 1 by 3

3(3y)-5(3z)=4(3)

9y-15z=12

subtract II from I

(9y-15z=12)-(9y-2z=7)

(9y-9y) (-15z+2z)=(12-7)

-13z=-5

z=-5/13

3y-5z=4

3y-5(-5/13)

3y-25/13=4

3y=4-25/13

3y=52-25/13

y=27/39

y=7/13

z=-5/13

y=7/13

plz mark me as brainlist