Question

The solution of 8x+18y=70 and 4x-9y=21 is

Answer 1

Step-by-step explanation:

8x+18y=70  (1)

(4x-9y=21)*2 we get

8x-18y=41    (2)

Adding (1) and (2)

we get

16x=111

x=111/16

subtracting (2) from (1)

36y=29

y= 29/36