Question

900-(48·7÷6-4·5)=?   900-(48·7÷6-4)·5=?  (900-48·7)÷6-4·5=?  900-48·7÷(6-4)·5=?

Answer 1

900-(48*7/6-4*5)=864

1) 48*7=336

2)336/6=56

3)4*5 =20

4)56-20=36

5)900-36=864  

900-(48*7/6-4)*5=640

1)  48*7=336

2)336/6=56

3)56-4=52

4)52*5=260  

5)900-260=640

(900-48*7)/6-4*5=74

1)  48*7=336

2)900-336=564

3)564/6=94

4/4*5=20

5)94-20=74

900-48*7/(6-4)*5=60

1) 6-4=2

2) 48*7=336

3) 336/2=168

4) 168*5=840

5) 900-840=60