Question

(9x99-99:9)-[(83-27:9)x10+2x35}=
6+3 x{ 18:3- 3x (12:3-3) } :9=

Answer 1

1)(9·99-99:9)-[(83-27:9)·10+2·35]=(891-11)-[(83-3)·10+70]=880-(80·10+70)=880-870=10

2)6+3·[18:3-3·(12:3-3)]:9=6+3·[6-3·(4-3)]=6+3·(6-3·1)=6+3·3=6+9=15

Answer 2

(9x99-99:9)-[(83-27:9)x10+2x35]
=(891-11)-[(83-3)x10+70]
=880-(80x10+70)
=880-(800+70)
=880-870
=10

6+3x[18:3-3x(12:3-3)]:9
=6+3x[6-3x(4-3)]:9
=6+3x(6-3x1):9
=6+3x(6-3):9
=6+3x3:9
=6+9:9
=6+1
=7