Question

1) 7x + 3y = 6

2x -5y= 27

2) 8a -y = 3
-5a +6y =2

answer with the explaination please
giving 20 points

Answer 1

Explanation:

7x + 3y = 6

7x = 6 - 3y

x = ( 6- 3y)/7

then we replace x in the second equation by (6-3y)/7

so 2 [(6-3y)/7] -5y =27

(12-6y)/7 -5y =27

(12- 6y -35y)/7 =27

12- 41y = 27x7

-41y = 189- 12

y = 177/ (-41)

y =-177/41

<sorry hun my eng ain't good>

we replace y by its valeur in the first equation

7x -531/41 =6

7x =6 + 531/41

7x =(246+531)/41

7x = 777/41

x= 111/41

soo yeah :)