Question

a) (3-2x6) elevado a dois :(-3)elevado a 3 =


b) 4 1/2 . 2 1/3=

c) -7/12+(-4/15+2)-(7/6-3/4)=

Answer 1

a) ( 3 - 2 × 6 ) ² ÷ ( - 3 ) ³ =
    ( 3 - 12 ) ² ÷ ( - 27 ) =
     9 ² ÷ ( - 27 ) =
    81 ÷ ( - 27 ) =
   - 3
b)  4 .1/2 . 2. 1/3 =  
4/1.1/2 = 2
2/1.1/3 = 2/3
2/1.1/3 = 4/3