Question

solve the equation by using elamination method
8x+6y=100000
5x+9y=80000​

Answer 1

8x+6y=100000 -------eq.1

5x+9y=80000----------eq.2

multiply eq.1 by 5 and eq.2 by 8

40x+30y=500000 -----------eq.3

40x+64y=640000------------eq.4

subtract eq.3 and eq.4

to get y= 4,117.64

substitute the value of y in eq.1

8x+6×4117.64=100000

to get x=9,411.77