Seudรณnimo Seudรณnimo 02-03-2021 Physics contestada so u see what had happened was i need help again.. Subtracting a number is the same as adding its opposite. Use this understanding to complete each of the equations below. โ13โ23= โ13 +BLANK =BLANK โ13โ(โ23)= โ13 + BLANK =BLANK