(-15) + 20(-3) - 10

(a)  

23 - 47 + 18 - (-12) =

(a)  

-1(-3)(-2)(-2) =

(a)  

12 + (-20 x 5) + 34 =

(a)  

-7 - (-4)

(a)  

(a)  

7 + (-8)

(a)  

-6 + (-4)

(a)  

5 x -8

(a)