Question

X+y=6
3x-2y=13 como eu resolvo?

Answer 1

x+y=6 
x=6-y
3( 6-y) - 2y= 13
18-3y-2y=13
-3y-2y=13 - 18
-5y= -5 .( -1)
5y=5
y=5/5 y=1

x+y=6
x=6 - y
x=6 - 1 x= 5