a) 5 · ( - 2) + 7 · ( - 3 ) + ( - 36 ) : ( - 4 ) = - 10 - 21 + 9 =- 31 + 9 = - 22
b) ( - 15 ) : 5 + ( - 4 ) · ( - 5 ) - 2 · 9 : ( - 6 ) =
= - 3 + 20 - 18 : ( - 6 ) =
= 17 + 3 =
= 20
c)
3 · [ 56 - ( - 28 ) : ( - 4 ) ] + ( - 72 ) : 24 = 144
= 3 · ( 56 - 7 ) - 3 =
= 3 · 49 - 3 =
= 147 - 3 =
= 144
d)
( - 4 ) · ( 13 · 2 - 24 : 6 ) - 99 : ( - 11 ) = - 79
= ( - 4 ) · ( 26 - 4 ) + 9 =
= ( - 4 ) · 22 + 9 =
= - 88 + 9
= - 79
e)
( -13 ) · ( 83 - 23 ) : ( - 10 ) + [ 21 - 98 : ( - 2 ) ] = 148
= ( - 13 ) · 60 : ( - 10 ) + ( 21 + 49 ) =
= 78 + 70 =
= 148
f)
( - 15 ) : ( - 25 + 20 ) - ( 35 - 39 : 3) = - 19
= ( - 15 ) : ( - 5 ) - ( 35 - 13 ) =
= 3 - 22 =
= - 19
5)
a) [ 2 · ( - 14 ) - 8 · ( - 14 ) + ( - 7 ) · 6 ] : ( - 7 ) + 9 = 3
= ( - 28 + 112 - 42 ) : ( - 7 ) + 9 =
= ( 84 - 42 ) : ( - 7 ) + 9 =
= 42 : ( - 7 ) + 9 =
= - 6 + 9 =
= 3
b) [ ( - 11 ) · 21 + ( 23 - 74 ) - ( - 63 ) : ( - 9 ) ] · 2 - 8 = - 570
= ( - 231 - 51 - 7 ) · 2 - 8 =
= ( - 282 - 7 ) · 2 - 8 =
= ( - 289 ) · 2 - 8 =
= - 578 - 8 =
= - 570
c) { ( - 72 ) : ( - 8 ) - ( - 72 ) · ( - 2) + [ ( - 13 ) - 2 · 11 ] } - 15 = - 185
= [ 9 - 144 + ( - 35 ) ] - 15 =
= ( - 135 - 35 ) - 15 =
= - 170 - 15 =
= - 185
d)
- 18 + { - 4 - [ ( - 10 ) + ( - 13 ) + 17 ] - 33 } + 43 =
= - 18 + [ - 4 - ( - 10 - 13 + 17 ) - 33 ] + 43 =
= - 18 + [ - 4 - ( - 23 + 17 ) - 33 ] + 43 =
= - 18 + [ - 4 - ( - 6 ) - 33 ] + 43 =
= - 18 + ( - 4 + 6 - 33 ) + 43 =
= - 18 + ( 2 - 33 ) + 43 =
= - 18 - 31 + 43 =
= - 49 + 43 =
= - 6
