Question

solve 8x+5y=9 , 3x+2y=4 by any method

Answer 1

substitution method.....
x=(9-5y)÷8...............(1)
then
3((9-5y)÷8)+2y =4......

then solve these equation
we get
x =-2

then y = {-18=9-5y} thus y =5

Answer 2

Hi friend,

By elimination method :

8x+5y = 9---------(1) ×2

3x+2y = 4 -----(2). ×5

we get,
16x+10y = 18
15x+10y= 20

subtracting both the equations we get;

x = -2

Putting the value of x in (1)...
8×-2 +5y = 9

-16+5y = 9

5y = 9+16

5y = 25

y = 25/5

y = 5

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Hope this helped u...