Question

pfv me ajudem!!{2x +y =6,60{ x + y =4,10__+___=____

Answer 1

2x+y=6,60
x + y=4,10 x(-1)

2x+y=6,60
-x-y=-4,10

x=2,50   

2,5+y=4,10
y=4,10-2,5
y=1,6

x+y=4,10
2,5+1,6=4,10
4,10=4,10