Question

find a if x=1, y=2

1) 9ax +12ay=63
2) 5x+3y=a​

Answer 1

Answer:

1) a(9+24) =63

a=63/33

a=21/11

2) 5+6 =a

a= 11

Answer 2

111Answer:

In (1) a=21/11        

and

in (2) a = 11

Step-by-step explanation:

1) 9ax + 12ay = 63 ----------------------------1

substituting the values of x and y in equation 1 , we get

9a(1)+12a(2) = 63

9a +24a = 63

33a=63

a = 63/33 = 21/11

2) 5x + 3y = a ------------------------------------- 1

substituting the values of x and y in equation 1 , we get

5(1) + 3(2) = a

5+6 = a

a = 11