Respuesta :

joannakaya
i will help you ok .778=7178=(71)(87)=(7)(8)(1)(7)=567=8 

7(78)=(71)(78)=(7)(7)(1)(8)=498(Decimal: 6.125)

7−78=71−78=71+−78=568+−78=56+−78=498(Decimal: 6.125)

7+78=71+78=568+78=56+78=638(Decimal: 7.875)

i have adding subtracting , dividing , and multiplying  there all your anwser i hope this helpxx