Question

Find the solution of the system of equations.
x+2y=9
-6x+4y=-46

Answer 1

x=-3.5 and y=6.25

Explanation:

x+2y=9

x=9-2y

-6(9-2y)+4y=46

-54+12y+4y=46

16y-54=46

16y = 100

y = 100/16 = 50/8 = 25/4 = 6.25

x+2(6.25)=9

x+12.5=9

x= -3.5