contestada

Which is correct and why?
1. Amelia is correct because 77+x=115
2.leo is correct because 77+x=115
3. Amelia is correct because x=77+115
4.leo is correct because x=77+114

Which is correct and why 1 Amelia is correct because 77x115 2leo is correct because 77x115 3 Amelia is correct because x77115 4leo is correct because x77114 class=