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1 [ 10x (-6) -4
[ (-54 ) + (-9)] ;3 - 9 น.
4
9
3 (-200): (12 -EO) =
4 169 -[A3+(- 60) -
5 [ 225 - (-15 )-G9)=
6 [(-81) -(- 3 )1-(-23 ) =
- 21 + (-440 - 11 ) = - (1
4 - 1[ ( - 322) : (- 14 )1=
4 [(-90)-(-90 )] - (- 12 ) =
40 - 10 [5 4 + (-23 )](-1 ) =