300-(90+70)+(86-46) 90:(10•9):(9:9)

Question

300-(90+70)+(86-46)
90:(10•9):(9:9)

Answer 1

300-(90+70)+(86-46)=
300-160+40=
140+40=
180

90:(10*9):(9:9)=
90:90:1=
1

Answer 2

300-(90+70)+(86-46)90:(10×9):(9:9)=180