Question

SISTEMAS DE ECUACIONES

2x-y=7
x+2y=6



2x+3y=3
5x-6y=3​

Answer 1

1.

X=6-2y

2(6-2y)-y=7

12-4y-y=7

-5y=-5

y=1

X=6-2y=6-2=4

2.

X=3/2-3/2y

X=3/5+6/5y

3/2-3/2y= 3/5+6/5y

15-15y=6+12y

-27y=-9

y=3

2x+9=3

2x=-6

X=-3