1) 8* ( -3) + ( - 7 ) = -24 - 7 = - 31
2) ( - 2) * ( 5) - 12 = - 10 - 12 = - 22
3) 35 - ( -7) * 6 = 35 - (- 42)= 35 + 42 = 77
4) 32 : ( - 4 ) + 5= - 8 + 5 = - 3
5) 64 : ( - 16 ) = -64 : 16 = - 4
6) 17 - ( - 12) : 4 = 17 - ( - 3) = 17 + 3 = 20
7) ( -21) : ( - 3 ) - 9 = 7 - 9 = - 2
8) ( - 42 ) : 6 + 10 = - 7 + 10 =3
9) 27- ( -15 ) : 3 = 27 - (- 5) = 27 + 5 = 32
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1) 8* ( -3) + ( - 7 ) = -24 - 7 = - 31
2) ( - 2) * ( 5) - 12 = - 10 - 12 = - 22
3) 35 - ( -7) * 6 = 35 - (- 42)= 35 + 42 = 77
4) 32 : ( - 4 ) + 5= - 8 + 5 = - 3
5) 64 : ( - 16 ) = -64 : 16 = - 4
6) 17 - ( - 12) : 4 = 17 - ( - 3) = 17 + 3 = 20
7) ( -21) : ( - 3 ) - 9 = 7 - 9 = - 2
8) ( - 42 ) : 6 + 10 = - 7 + 10 =3
9) 27- ( -15 ) : 3 = 27 - (- 5) = 27 + 5 = 32