Question

solve the equation8x+5y=9 3x+2y=4​

Answer 1

8x+5y=9...(I)

3x+2y=4 ......ii

multiply (i) by 2 and (ii) by 5 And subtract (ii) from i

16x+ 10y -15x -10y = 18 - 20

x= -2

now

8 × -2 +5y = 9

-16+5y=9

5y=25

y=5