Question

se stie ca x+y =1250 calculati x+ y +5. ,x+5+y. 3+x+y.

Answer 1

$x+y=1250 \\ x+y+5=1250+5=1255 \\ x+5+y=(x+y)+5=1250+5=1255 \\ 3+x+y=3+1250=1253$